Improved: improves init-gradle-wrapper.sh

A slight change at the bottom of the file

Thanks: Charles Carlsson for report
diff --git a/gradle/init-gradle-wrapper.sh b/gradle/init-gradle-wrapper.sh
index a8c2d34..764b406 100755
--- a/gradle/init-gradle-wrapper.sh
+++ b/gradle/init-gradle-wrapper.sh
@@ -97,10 +97,12 @@
     echo " === Control downloaded files ==="
     if [ -n "$(whereIsBinary shasum)" ]; then
         echo "$SHASUM_GRADLE_WRAPPER_FILES" | shasum -c -;
+        echo " Warning: shasum not found, the downloaded files could not be verified"
         exit 0;
+        else
+        exit 1;
+        fi
     fi
-
-    echo " Warning: shasum not found, the downloaded files could not be verified"
     exit 1;
 fi
-echo " Nothing to be done"
+echo " Nothing more to be done"