strbuf: add strbuf_tolower function

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 87f327ff8bcd2c2a29fcbabe74c226232b54f728..c081668dfe16c85dda29bace564f7c1c3da77cb0 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -655,7 +655,6 @@ else # normal case, use ../bin-wrappers only unless $with_dashes:
        fi
 fi
 GIT_TEMPLATE_DIR="$GIT_BUILD_DIR"/templates/blt
-unset GIT_CONFIG
 GIT_CONFIG_NOSYSTEM=1
 GIT_ATTR_NOSYSTEM=1
 export PATH GIT_EXEC_PATH GIT_TEMPLATE_DIR GIT_CONFIG_NOSYSTEM GIT_ATTR_NOSYSTEM