Update download_toolchain.sh

download_toolchain.sh

@@ -7,8 +7,8 @@
 # lanch_argv : [-help] 帮助
 # lanch_argv : [-list] 获取下载列表
 # ----------------------------------------------------------------------------------------------------
-SCRIPT_PATH=$(cd ${BASH_SOURCE[0]%/*} && pwd)
 SCRIPT_NAME=${BASH_SOURCE[0]##*/}
+SCRIPT_PATH=$(if [ -n "${BASH_SOURCE[0]%${SCRIPT_NAME}}" ]; then cd ${BASH_SOURCE[0]%${SCRIPT_NAME}}; fi; pwd)
 
 echo "[Git Branch Auto Download]"