sanlock: Properly indent

One of latest patches (0fce94fe) didn't properly indented #define
making syntax-check fail.

src/locking/lock_driver_sanlock.c

@@ -60,7 +60,7 @@
  * too old to provide that define, and probably the functionality too
  */
 #ifndef SANLK_RES_SHARED
-#define SANLK_RES_SHARED    0x4
+# define SANLK_RES_SHARED    0x4
 #endif
 
 typedef struct _virLockManagerSanlockDriver virLockManagerSanlockDriver;