Fix bridge.c warnings with gcc-4.4

Fix bridge.c warnings with gcc-4.4

 bridge.c: In function 'brSetInetAddr':
 bridge.c:665: error: dereferencing pointer '({anonymous})' does break strict-aliasing rules
 bridge.c:665: note: initialized from here
 bridge.c:666: error: dereferencing pointer '({anonymous})' does break strict-aliasing rules
 bridge.c:666: note: initialized from here

Fix qemud.c warnings with gcc-4.4

 qemud.c: In function ‘remoteListenTCP’:
 qemud.c:675: error: dereferencing pointer ‘sa.72’ does break strict-aliasing rules
 qemud.c:675: note: initialized from here
 qemud.c:678: error: dereferencing pointer ‘sa.73’ does break strict-aliasing rules
 qemud.c:678: note: initialized from here