Core: Fix many "errors"/warnings and coding style (1)

Extractors, worldserver, authserver, shared and collision affected

Errors were found using Cppcheck, open-source static analysis tool

src/server/collision/Maps/MapTree.cpp

@@ -124,8 +124,8 @@ namespace VMAP
         return intersectionCallBack.result;
     }
 
-    StaticMapTree::StaticMapTree(uint32 mapID, const std::string &basePath):
-        iMapID(mapID), iTreeValues(0), iBasePath(basePath)
+    StaticMapTree::StaticMapTree(uint32 mapID, const std::string &basePath)
+        : iMapID(mapID), iTreeValues(0), iBasePath(basePath), iIsTiled(false)
     {
         if (iBasePath.length() > 0 && iBasePath[iBasePath.length()-1] != '/' && iBasePath[iBasePath.length()-1] != '\\')
         {