Core/Chat: fixed crash in commands

closes #110

src/game/Chat/Chat.cpp

@@ -136,7 +136,7 @@ bool ChatHandler::hasStringAbbr(const char* name, const char* part)
         if (!*part)
             return false;
 
-        for (;;)
+        while (true)
         {
             if (!*part)
                 return true;
@@ -246,7 +246,6 @@ bool ChatHandler::ExecuteCommandInTable(std::vector<ChatCommand> const& table, c
 
     for (uint32 i = 0; i < table.size(); ++i)
     {
-        // for data fill use full explicit command names
         if (table[i].Name == nullptr)
             continue;
 
@@ -258,6 +257,9 @@ bool ChatHandler::ExecuteCommandInTable(std::vector<ChatCommand> const& table, c
         {
             for (uint32 j = 0; j < table.size(); ++j)
             {
+                if (table[j].Name == nullptr)
+                    continue;
+
                 if (!hasStringAbbr(table[j].Name, cmd.c_str()))
                     continue;
 
@@ -268,7 +270,6 @@ bool ChatHandler::ExecuteCommandInTable(std::vector<ChatCommand> const& table, c
                 }
             }
         }
-
         if (match)
             continue;