Use local vars in git clone function

Signed-off-by: thepetk <[email protected]>

Author: thepetk

build-tools/cache_samples.sh

@@ -12,9 +12,9 @@ set -eu
 # 2: sampleDir      (output directory of the clone command)
 # 3: revision       (the prefered revision of the git repo we want to clone)
 function clone_sample_repo() {
-  gitRepository="$1"
-  sampleDir="$2"
-  revision="$3"
+  local gitRepository="$1"
+  local sampleDir="$2"
+  local revision="$3"
   if [[ $revision == "null" ]]; then
     echo "cloning $gitRepository to $sampleDir"
     git clone $gitRepository $sampleDir