Disable text input as startup

We're not handling any keyboard input at that point anyway.

src/PowderToyFontEditor.cpp

@@ -487,6 +487,8 @@ int main(int argc, char * argv[])
 
 	SDLOpen();
 
+	StopTextInput();
+
 	ui::Engine::Ref().g = new Graphics();
 	ui::Engine::Ref().Scale = scale;
 	ui::Engine::Ref().SetResizable(resizable);

src/PowderToySDL.cpp

@@ -871,6 +871,9 @@ int main(int argc, char * argv[])
 		exit(-1);
 	}
 #endif
+
+	StopTextInput();
+
 	ui::Engine::Ref().g = new Graphics();
 	ui::Engine::Ref().Scale = scale;
 	ui::Engine::Ref().SetResizable(resizable);