build: msvc uninitialized variables. (#2239)

MSVC build failing because of a warning treated as an error for
variables being used without initializing even though they are being
passed as references.

main/gui/source/window/window.cpp

@@ -985,7 +985,7 @@ namespace hex {
             glfwWindowHint(GLFW_MAXIMIZED, initialWindowProperties->maximized);
         }
 
-        int monitorX, monitorY;
+        int monitorX = 0, monitorY = 0;
         int monitorWidth = std::numeric_limits<int>::max(), monitorHeight = std::numeric_limits<int>::max();
         GLFWmonitor *monitor = glfwGetPrimaryMonitor();
         if (monitor != nullptr) {