make.bat: skip SVN update when running make code_update

regression from rB116d7b0042bba7d6cabd8e04c7d020ac3816caf3

build_files/windows/parse_arguments.cmd

@@ -80,9 +80,11 @@ if NOT "%1" == "" (
 	REM Non-Build Commands
 	) else if "%1" == "update" (
 		SET BUILD_UPDATE=1
+        SET BUILD_UPDATE_SVN=1
 		set BUILD_UPDATE_ARGS=
 	) else if "%1" == "code_update" (
 		SET BUILD_UPDATE=1
+        SET BUILD_UPDATE_SVN=0
 		set BUILD_UPDATE_ARGS="--no-libraries"
 	) else if "%1" == "ninja" (
 		SET BUILD_WITH_NINJA=1

build_files/windows/reset_variables.cmd

@@ -34,3 +34,4 @@ set BUILD_WITH_SCCACHE=
 set ICONS=
 set ICONS_GEOM=
 set DOC_PY=
+SET BUILD_UPDATE_SVN=