Making changes according to the new CFLAGS

- making changes to honour warnings by the new compiler flags, -Wall and -std=c99

Author: abysamross

Diff for: mmap_pthreads/mmaptrial.c

@@ -210,7 +210,6 @@ int main(int argc, char* argv[]) {
 		}
 	}
 
-quit:
 	free(filename);
 	return 0;
 }