Fix file casing in project file

Commit migrated from https://github.com/dotnet/corefx/commit/a05d99a5851977ddb006aee1c10d2ef427d16697

diff --git a/src/libraries/init-tools.sh b/src/libraries/init-tools.sh
index 34deeb1..7a04824 100755 (executable)
--- a/src/libraries/init-tools.sh
+++ b/src/libraries/init-tools.sh
@@ -16,7 +16,7 @@ __BUILD_TOOLS_SEMAPHORE=$__TOOLRUNTIME_DIR/$__BUILD_TOOLS_PACKAGE_VERSION/init-t
 
 if [ -e $__BUILD_TOOLS_SEMAPHORE ]; then
     echo "Tools are already initialized"
-    exit 0
+    return #return instead of exit because this script is inlined in other scripts which we don't want to exit
 fi
 
 if [ -e $__TOOLRUNTIME_DIR ]; then rm -rf -- $__TOOLRUNTIME_DIR; fi