Additional string fixes

Source/Atomic/Network/MasterServerClient.cpp

@@ -133,7 +133,7 @@ void MasterServerClient::SendMessageToMasterServer(const String& msg)
 {
     if (masterTCPConnection_)
     {
-        String netString = String(msg.Length()) + ':' + msg;
+        String netString = String(msg.Length()) + ":" + msg;
         masterTCPConnection_->Send(netString.CString(), netString.Length());
     }
     else

Source/Tools/PackageTool/PackageTool.cpp

@@ -229,7 +229,7 @@ void WritePackageFile(const String& fileName, const String& rootDir)
                 
                 unsigned packedSize = LZ4_compressHC((const char*)&buffer[pos], (char*)compressBuffer.Get(), unpackedSize);
                 if (!packedSize)
-                    ErrorExit("LZ4 compression failed for file " + entries_[i].name_ + " at offset " + pos);
+                    ErrorExit("LZ4 compression failed for file " + entries_[i].name_ + " at offset " + String(pos));
                 
                 dest.WriteUShort(unpackedSize);
                 dest.WriteUShort(packedSize);