Guard against referncing repeat_again_rec.keys[0] if the queue is empty.

Reset previous command state if a repeated command is interrupt by a key
press.


git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7607 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 5 insertions, 2 deletions

diff --git a/crawl-ref/source/acr.cc b/crawl-ref/source/acr.cc
index 16f528d3e8..613ea17f5a 100644
--- a/crawl-ref/source/acr.cc
+++ b/crawl-ref/source/acr.cc
@@ -1415,7 +1415,9 @@ static void _input()
     {
         // User pressed a key, so stop repeating commands and discard
         // the keypress.
-        crawl_state.cancel_cmd_repeat();
+        crawl_state.cancel_cmd_repeat("Key pressed, interrupting command "
+                                      "repetition.");
+        crawl_state.prev_cmd = CMD_NO_CMD;
         getchm();
         return;
     }
@@ -4285,7 +4287,8 @@ static void _setup_cmd_repeat()
         {
             repeat_again_rec.keys.pop_front();
         }
-        while (repeat_again_rec.keys[0] != ch);
+        while (repeat_again_rec.keys.size() > 0
+               && repeat_again_rec.keys[0] != ch);
 
         repeat_again_rec.keys.pop_front();
     }