Fix fetching the SDK version

Author: weltling

appveyor/build.bat

@@ -13,11 +13,11 @@ if not exist "%PHP_BUILD_OBJ_DIR%" (
 	mkdir "%PHP_BUILD_OBJ_DIR%"
 )
 
+for /f "tokens=*" %%a in ('type %PHP_BUILD_CACHE_SDK_DIR%\VERSION') do set GOT_SDK_VER=%%a
 if not exist "%PHP_BUILD_CACHE_SDK_DIR%" (
 	echo Cloning remote SDK repository
 	git clone --branch %SDK_BRANCH% %SDK_REMOTE% "%PHP_BUILD_CACHE_SDK_DIR%" 2>&1 
 ) else (
-	for /f "tokens=*" %%a in ('type %PHP_BUILD_CACHE_SDK_DIR%\VERSION') do set GOT_SDK_VER=%%a
 	echo Got SDK version %GOT_SDK_VER%
 	if NOT "%GOT_SDK_VER%" == "%PHP_BUILD_SDK_BRANCH:~8%" (
 		echo Updating to the configured SDK version %SDK_BRANCH:~8%