Fix bad res file include in VS project and simplify a bit

platform/windows/SCsub

@@ -7,6 +7,7 @@ from platform_methods import run_in_subprocess
 import platform_windows_builders
 
 common_win = [
+    "godot_win.cpp",
     "context_gl_win.cpp",
     "crash_handler_win.cpp",
     "os_windows.cpp",
@@ -17,17 +18,17 @@ common_win = [
     "windows_terminal_logger.cpp"
 ]
 
-restarget = "godot_res" + env["OBJSUFFIX"]
+res_file = 'godot_res.rc'
 
-obj = env.RES(restarget, 'godot_res.rc')
+res_target = "godot_res" + env["OBJSUFFIX"]
 
-common_win.append(obj)
+res_obj = env.RES(res_target, res_file)
 
-prog = env.add_program('#bin/godot', ['godot_win.cpp'] + common_win, PROGSUFFIX=env["PROGSUFFIX"])
+prog = env.add_program('#bin/godot', common_win + res_obj, PROGSUFFIX=env["PROGSUFFIX"])
 
 # Microsoft Visual Studio Project Generation
 if env['vsproj']:
-    env.vs_srcs = env.vs_srcs + ["platform/windows/godot_win.cpp"]
+    env.vs_srcs = env.vs_srcs + ["platform/windows/" + res_file]
     for x in common_win:
         env.vs_srcs = env.vs_srcs + ["platform/windows/" + str(x)]