am 1bc2c6af: Merge "Allow to build "winsdk-tools" alone."

* commit '1bc2c6af5b73d6d448452b8bcb75222fbc81a532':
  Allow to build "winsdk-tools" alone.
diff --git a/core/Makefile b/core/Makefile
index 05cda6e..8cc7a54 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1748,7 +1748,7 @@
 MAIN_SDK_NAME := $(sdk_name)
 MAIN_SDK_DIR  := $(sdk_dir)
 MAIN_SDK_ZIP  := $(INTERNAL_SDK_TARGET)
-ifneq ($(filter win_sdk,$(MAKECMDGOALS)),)
+ifneq ($(filter win_sdk winsdk-tools,$(MAKECMDGOALS)),)
 include $(TOPDIR)development/build/tools/windows_sdk.mk
 endif