More trivial syntax and logic cleanup.

Spotted by Clang. No functional change intended.

src/add-ons/kernel/bus_managers/usb/PhysicalMemoryAllocator.h

@@ -22,7 +22,7 @@ public:
 										uint32 minCountPerBlock);
 									~PhysicalMemoryAllocator();
 
-		status_t					InitCheck() { return fStatus; };
+		status_t					InitCheck() { return fStatus; }
 
 		status_t					Allocate(size_t size,
 										void **logicalAddress,

src/add-ons/kernel/busses/usb/ehci.h

@@ -76,7 +76,7 @@ virtual	status_t					NotifyPipeChange(Pipe *pipe,
 static	status_t					AddTo(Stack *stack);
 
 		// Port operations for root hub
-		uint8						PortCount() { return fPortCount; };
+		uint8						PortCount() { return fPortCount; }
 		status_t					GetPortStatus(uint8 index, usb_port_status *status);
 		status_t					SetPortFeature(uint8 index, uint16 feature);
 		status_t					ClearPortFeature(uint8 index, uint16 feature);
@@ -84,7 +84,7 @@ static	status_t					AddTo(Stack *stack);
 		status_t					ResetPort(uint8 index);
 		status_t					SuspendPort(uint8 index);
 
-virtual	const char *				TypeName() const { return "ehci"; };
+virtual	const char *				TypeName() const { return "ehci"; }
 
 private:
 		// Controller resets

src/add-ons/kernel/network/protocols/tcp/tcp.cpp

@@ -34,10 +34,8 @@
 //#define TRACE_TCP
 #ifdef TRACE_TCP
 #	define TRACE(x) dprintf x
-#	define TRACE_BLOCK(x) dump_block x
 #else
 #	define TRACE(x)
-#	define TRACE_BLOCK(x)
 #endif
 
 

src/add-ons/kernel/network/stack/interfaces.cpp

@@ -1188,7 +1188,7 @@ Interface::_ChangeAddress(RecursiveLocker& locker, InterfaceAddress* address,
 /*!	Searches for a specific interface by name.
 	You need to have the interface list's lock hold when calling this function.
 */
-static struct Interface*
+static Interface*
 find_interface(const char* name)
 {
 	ASSERT_LOCKED_RECURSIVE(&sLock);
@@ -1206,7 +1206,7 @@ find_interface(const char* name)
 /*!	Searches for a specific interface by index.
 	You need to have the interface list's lock hold when calling this function.
 */
-static struct Interface*
+static Interface*
 find_interface(uint32 index)
 {
 	InterfaceList::Iterator iterator = sInterfaces.GetIterator();

src/add-ons/kernel/network/stack/interfaces.h

@@ -152,8 +152,8 @@ public:
 			domain_datalink*	DomainDatalink(net_domain* domain)
 									{ return DomainDatalink(domain->family); }
 
-	inline	void				SetBusy(bool busy) { atomic_set(&fBusy, busy ? 1 : 0); };
-	inline	bool				IsBusy() const { return atomic_get((int32*)&fBusy) == 1 ;};
+	inline	void				SetBusy(bool busy) { atomic_set(&fBusy, busy ? 1 : 0); }
+	inline	bool				IsBusy() const { return atomic_get((int32*)&fBusy) == 1 ; }
 
 #if ENABLE_DEBUGGER_COMMANDS
 			void				Dump() const;

src/add-ons/kernel/network/stack/routes.h

@@ -15,7 +15,7 @@
 #include <util/DoublyLinkedList.h>
 
 
-class InterfaceAddress;
+struct InterfaceAddress;
 
 
 struct net_route_private

src/system/kernel/cache/file_cache.cpp

@@ -37,7 +37,6 @@
 
 // maximum number of iovecs per request
 #define MAX_IO_VECS			32	// 128 kB
-#define MAX_FILE_IO_VECS	32
 
 #define BYPASS_IO_SIZE		65536
 #define LAST_ACCESSES		3

src/system/kernel/device_manager/FileDevice.cpp

@@ -288,7 +288,6 @@ FileDevice::Control(void* _cookie, int32 op, void* buffer, size_t length)
 		case B_GET_ICON_NAME:
 			return user_strlcpy((char *)buffer, "devices/device-volume",
 				B_FILE_NAME_LENGTH);
-			break;
 
 		case B_GET_VECTOR_ICON:
 		{

src/system/kernel/locks/lock.cpp

@@ -40,11 +40,8 @@ struct rw_lock_waiter {
 	bool			writer;
 };
 
-#define MUTEX_FLAG_OWNS_NAME	MUTEX_FLAG_CLONE_NAME
 #define MUTEX_FLAG_RELEASED		0x2
 
-#define RW_LOCK_FLAG_OWNS_NAME	RW_LOCK_FLAG_CLONE_NAME
-
 
 int32
 recursive_lock_get_recursion(recursive_lock *lock)

src/system/kernel/slab/allocator.cpp

@@ -23,7 +23,6 @@
 #include "MemoryManager.h"
 
 
-#define DEBUG_ALLOCATOR
 //#define TEST_ALL_CACHES_DURING_BOOT
 
 static const size_t kBlockSizes[] = {

src/system/kernel/vm/VMAddressSpace.cpp

@@ -341,8 +341,8 @@ VMAddressSpace::_DumpCommand(int argc, char** argv)
 		} else {
 			aspace->Dump();
 		}
-		return 0;
 	}
+
 	return 0;
 }