Ignore empty Strings during String to FileArray conversion

* The current state of the code is that an empty String, is converted to a new File("") object with an empty String
* A File object instantiated by this will be a File object with an absolute Path that is equivalent to the Path from which the application was started
* The result of this is relatively unpredictable
* Thus empty String should not be converted to File object and not be added to the output

Author: stefanhahmann

src/main/java/org/scijava/convert/FileListConverters.java

@@ -82,6 +82,8 @@ public <T> T convert(final Object src, final Class<T> dest) {
 			final String[] tokens = StringUtils.splitUnquoted((String) src, ",");
 			final List<File> fileList = new ArrayList<>();
 			for (final String filePath : tokens) {
+				if ( filePath.isEmpty() )
+					continue;
 				fileList.add(new File(filePath.replaceAll("^\"|\"$", "")));
 			}
 			return (T) fileList.toArray(new File[fileList.size()]);