Set close-on-exec flag on USB Kit device descriptors, so apps launched by Tracker won't inherit all the fds to hubs as they do on Zeta :)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24891 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/device/USBDevice.cpp

@@ -49,7 +49,7 @@ BUSBDevice::SetTo(const char *path)
 		return B_BAD_VALUE;
 
 	fPath = strdup(path);
-	fRawFD = open(path, O_RDWR);
+	fRawFD = open(path, O_RDWR|O_CLOEXEC);
 	if (fRawFD < 0) {
 		Unset();
 		return B_ERROR;