BUG/MINOR: cli: fix missing break in command line parser

Yesterday's commit 12833bb ("MINOR: cli: add the new "show pools" command")
missed a "break" statement causing trouble to the "show map" command. Spotted
by Thierry Fournier.
diff --git a/src/dumpstats.c b/src/dumpstats.c
index 3adfdf3..2599785 100644
--- a/src/dumpstats.c
+++ b/src/dumpstats.c
@@ -2180,6 +2180,7 @@
 			case STAT_CLI_O_MLOOK:
 				if (stats_map_lookup(si))
 					appctx->st0 = STAT_CLI_PROMPT;
+				break;
 			case STAT_CLI_O_POOLS:
 				if (stats_dump_pools_to_buffer(si))
 					appctx->st0 = STAT_CLI_PROMPT;