Try harder to place abyss rune vaults.

The backup code for placing the rune on its own isn't gone yet, but it
should be needed considerably less now.

1 files changed, 7 insertions, 2 deletions

diff --git a/crawl-ref/source/abyss.cc b/crawl-ref/source/abyss.cc
index 7a7eadd9c6..5fc5e75d7a 100644
--- a/crawl-ref/source/abyss.cc
+++ b/crawl-ref/source/abyss.cc
@@ -240,10 +240,15 @@ static bool _abyss_place_rune_vault(const map_bitmask &abyss_genlevel_mask)
     // Make sure we're not about to link bad items.
     debug_item_scan();
 
-    const bool result = _abyss_place_vault_tagged(abyss_genlevel_mask,
-                                                  "abyss_rune");
+    bool result = false;
+    int tries = 10;
+    do
+        result = _abyss_place_vault_tagged(abyss_genlevel_mask, "abyss_rune");
+    while (!result && --tries);
 
     // Make sure the rune is linked.
+    // XXX: I'm fairly sure this does nothing if result == false,
+    //      but leaving it alone for now. -- Grunt
     _abyss_postvault_fixup();
     return result;
 }