tools/nxstyle.c: Fix a rare false alarm that could occur if a variable or function name begins with the sub-string 'union' or 'struct'. misc fixes under fs/ and sched/ from application of current version of nxstyle.

sched/clock/clock_getres.c

@@ -76,6 +76,7 @@ int clock_getres(clockid_t clock_id, struct timespec *res)
       case CLOCK_MONOTONIC:
 #endif
       case CLOCK_REALTIME:
+
         /* Form the timspec using clock resolution in nanoseconds */
 
         res->tv_sec  = 0;