fix check if theos/sdks folder is empty

action.yml

@@ -31,22 +31,22 @@ runs:
         if [ ! -d "${{ github.workspace }}/${{ inputs.theos-dir }}" ]; then
           git clone ${{ inputs.theos-src }} ${{ github.workspace }}/${{ inputs.theos-dir }} --recursive
           echo "Theos successfully obtained!"
-        else 
+        else
           echo "Theos already cached, skipping..."
         fi
 
     - name: get sdks
       shell: bash
       run: |
-        if [ ! -d "${{ github.workspace }}/${{ inputs.theos-dir }}/sdks" ]; then
+        if [[ "$(ls ${{ github.workspace }}/${{ inputs.theos-dir }}/sdks)" ]]; then
+          echo "Theos SDKs already cached, skipping..."
+        else
           cd ${{ github.workspace }}/${{ inputs.theos-dir }}/sdks
           curl -sLO ${{ inputs.theos-sdks }}/archive/master.zip
           TMP=$(mktemp -d)
           7z x master.zip -o$TMP
           mv $TMP/*-master/*.sdk $THEOS/sdks
           rm -r master.zip $TMP
-        else
-          echo "Theos SDKs already cached, skipping..."
         fi
 
 branding: