tools: fix NULL abuse

Josef 'Jeff' Sipek

2017-11-11 d03bb1cd7619ae6893ad7335c2acca7cc044c3d9

 tools/time.c

@@ -48,7 +48,7 @@
   Dl_info info;
   void *sym;

   if (dladdr1((void *)pc, &info, &sym, RTLD_DL_SYMENT) != NULL) {
   if (dladdr1((void *)pc, &info, &sym, RTLD_DL_SYMENT) != 0) {
      if (strstr(info.dli_fname, ".so") == NULL)
         *(char **)arg = (char *)info.dli_fname;
   }