Used wrong toggle for checking if var is not empty

action.yml

@@ -59,7 +59,7 @@ runs:
         ls ${RPM_PATH}
         REGULAR_PACKAGE=$(find ${RPM_PATH} -maxdepth 1 -type f \( -name "${PACKAGE_NAME}*\.rpm" -a ! -name "*-devel*\.rpm" \) | head -1)
         DEVEL_PACKAGE=$(find ${RPM_PATH} -maxdepth 1 -type f -name "${PACKAGE_NAME}-devel*\.rpm" | head -1)
-        if [[ -z "$REGULAR_PACKAGE" ]]; then
+        if [[ -n "$REGULAR_PACKAGE" ]]; then
           echo "Found regular package at ${REGULAR_PACKAGE}, uploading it."
           curl --user ${UPLOAD_USER}:${UPLOAD_USER_TOKEN} \
             --upload-file ${REGULAR_PACKAGE} \
@@ -67,7 +67,7 @@ runs:
         else
           echo "No regular package found, skipping..."
         fi
-        if [[ -z "$DEVEL_PACKAGE" ]]; then
+        if [[ -n "$DEVEL_PACKAGE" ]]; then
           echo "Found devel package at ${DEVEL_PACKAGE}, uploading it."
           curl --user ${UPLOAD_USER}:${UPLOAD_USER_TOKEN} \
             --upload-file ${DEVEL_PACKAGE} \