Update archive-build.sh

Author: Jason2866

tools/archive-build.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
-IDF_COMMIT=$(git -C "$IDF_PATH" rev-parse --short HEAD)
-IDF_BRANCH=$(git -C "$IDF_PATH" symbolic-ref --short HEAD)
+IDF_COMMIT=$(git -C "$IDF_PATH" rev-parse --short HEAD || echo "")
+IDF_BRANCH=$(git -C "$IDF_PATH" symbolic-ref --short HEAD || echo "")
 
 idf_version_string=${IDF_BRANCH//\//_}"-$IDF_COMMIT"
 archive_path="dist/arduino-esp32-libs-$idf_version_string.tar.gz"