jarFilesStream returns empty list and not null.

Signed-off-by: Rahul Krishna <[email protected]>

Author: rahlk

src/main/java/com/ibm/cldk/utils/ProjectDirectoryScanner.java

@@ -4,6 +4,7 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -37,7 +38,7 @@ public static List<Path> jarFilesStream(String projectPath) throws IOException {
                         .collect(Collectors.toList());
             }
         }
-        return null;
+        return new ArrayList<>();
     }
 
     public static List<Path> sourceFilesStream(String projectPath) throws IOException {