Make GetFactionReaction garbage argument optional

apps/openmw/mwscript/dialogueextensions.cpp

@@ -227,9 +227,6 @@ namespace MWScript
                 std::string faction2 = runtime.getStringLiteral (runtime[0].mInteger);
                 runtime.pop();
 
-                // ignore extra garbage argument
-                runtime.pop();
-
                 runtime.push(MWBase::Environment::get().getDialogueManager()
                              ->getFactionReaction(faction1, faction2));
             }

components/compiler/extensions0.cpp

@@ -180,7 +180,7 @@ namespace Compiler
             extensions.registerFunction("samefaction", 'l', "", opcodeSameFaction,
                 opcodeSameFactionExplicit);
             extensions.registerInstruction("modfactionreaction", "ccl", opcodeModFactionReaction);
-            extensions.registerFunction("getfactionreaction", 'l', "ccl", opcodeGetFactionReaction);
+            extensions.registerFunction("getfactionreaction", 'l', "ccX", opcodeGetFactionReaction);
             extensions.registerInstruction("clearinfoactor", "", opcodeClearInfoActor, opcodeClearInfoActorExplicit);
         }
     }