Fix other compile errors

src/client/CMakeLists.txt

@@ -104,4 +104,4 @@ set(client_SOURCES ${client_SOURCES}
 )
 
 set_source_files_properties(${CMAKE_CURRENT_LIST_DIR}/luafunctions.cpp
-                            PROPERTIES LANGUAGE CXX COMPILE_FLAGS "-g0 -O0")
+                            PROPERTIES LANGUAGE CXX COMPILE_FLAGS "-g0 -Os")

src/framework/CMakeLists.txt

@@ -129,7 +129,7 @@ set(framework_SOURCES ${framework_SOURCES}
 )
 
 set_source_files_properties(${CMAKE_CURRENT_LIST_DIR}/luafunctions.cpp
-                            PROPERTIES LANGUAGE CXX COMPILE_FLAGS "-g0 -O0")
+                            PROPERTIES LANGUAGE CXX COMPILE_FLAGS "-g0 -Os")
 
 # some build options
 option(CRASH_HANDLER "Generate crash reports" ON)

src/framework/luaengine/luainterface.cpp

@@ -902,7 +902,6 @@ void LuaInterface::setEnv(int index)
 {
     assert(hasIndex(index));
     lua_setfenv(L, index);
-    assert(ret == 1);
 }
 
 void LuaInterface::getTable(int index)