cmd/time.c: Initialize 'repeatable' variable

We cannot leave this uninitialized, set it to 0.

Reported-by: Coverity (CID: 144426)
Signed-off-by: Tom Rini <trini@konsulko.com>

cmd/time.c

@@ -28,7 +28,7 @@ static int do_time(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	ulong cycles = 0;
 	int retval = 0;
-	int repeatable;
+	int repeatable = 0;
 
 	if (argc == 1)
 		return CMD_RET_USAGE;