Removed more compiler warnings.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@5480 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/items/flyable.cpp

@@ -51,7 +51,7 @@ const wchar_t* getCakeString()
         case 1: return _("%0 is dubious of %1's cooking skills");
         //I18N: shown when hit by cake. %1 is the attacker, %0 is the victim.
         case 2: return _("%0 should not play with %1's lunch");
-        default: assert(false);
+        default: assert(false); return _("");   // avoid compiler warning
     }
 }
 
@@ -71,7 +71,7 @@ const wchar_t* getBowlingString()
         case 1 : return _("%1 strikes %0");
         //I18N: shown when hit by bowling ball. %1 is the attacker, %0 is the victim.
         case 2 : return _("%0 is bowled over by %1");
-        default: assert(false);
+        default: assert(false); return _("");  //  avoid compiler warning
     }
 }
 

src/items/plunger.cpp

@@ -47,7 +47,7 @@ const wchar_t* getPlungerInFaceString()
         case 0: return _("%0 gets a fancy mask from %1");
         //I18N: shown when a player receives a plunger in his face
         case 1: return _("%1 merges %0's face with a plunger");
-        default:assert(false);
+        default:assert(false); return _("");   // avoid compiler warning
     }
 }