kernel: follow-up to hrev56619: use new(std::nothrow)

to handle allocation failures.

Change-Id: I15d84b24dcea17741382b1d5285acf6219a39811
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5868
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

src/system/kernel/device_manager/legacy_drivers.cpp

@@ -1133,7 +1133,7 @@ start_watching(const char* base, const char* sub)
 static struct driver_entry*
 new_driver_entry(const char* path, dev_t device, ino_t node)
 {
-	driver_entry* entry = new driver_entry;
+	driver_entry* entry = new(std::nothrow) driver_entry;
 	if (entry == NULL)
 		return NULL;
 
@@ -1519,7 +1519,7 @@ legacy_driver_probe(const char* subPath)
 extern "C" status_t
 legacy_driver_init(void)
 {
-	sDriverHash = new DriverTable();
+	sDriverHash = new(std::nothrow) DriverTable();
 	if (sDriverHash == NULL || sDriverHash->Init(DRIVER_HASH_SIZE) != B_OK)
 		return B_NO_MEMORY;
 

src/system/kernel/low_resource_manager.cpp

@@ -468,7 +468,7 @@ register_low_resource_handler(low_resource_func function, void* data,
 	TRACE(("register_low_resource_handler(function = %p, data = %p)\n",
 		function, data));
 
-	low_resource_handler *newHandler = new low_resource_handler;
+	low_resource_handler *newHandler = new(std::nothrow) low_resource_handler;
 	if (newHandler == NULL)
 		return B_NO_MEMORY;
 

src/system/kernel/vm/VMAnonymousCache.cpp

@@ -1454,7 +1454,7 @@ swap_file_add(const char* path)
 	}
 
 	// do the allocations and prepare the swap_file structure
-	swap_file* swap = new swap_file;
+	swap_file* swap = new(std::nothrow) swap_file;
 	if (swap == NULL) {
 		close(fd);
 		return B_NO_MEMORY;