Fixed #883

Author: oscargus

CHANGELOG.md

@@ -35,6 +35,7 @@ to [sourceforge feature requests](https://sourceforge.net/p/jabref/features/) by
 - Integrity check now also checks broken file links, abbreviations in journal and booktitle, and incorrect use of proceedings with page numbers
 
 ### Fixed
+- Fixed [#883](https://github.com/JabRef/jabref/issues/883): No NPE during cleanup 
 - Fixed [#466](https://github.com/JabRef/jabref/issues/466): Rename PDF cleanup now also changes case of file name
 - Fixed [#621](https://github.com/JabRef/jabref/issues/621) and [#669](https://github.com/JabRef/jabref/issues/669): Encoding and preamble now end with newline.
 - Make BibTex parser more robust against missing newlines

src/main/java/net/sf/jabref/gui/actions/CleanupAction.java

@@ -157,7 +157,9 @@ private int showDialog() {
      */
     private void doCleanup(CleanupPreset preset, BibEntry entry, NamedCompound ce) {
         // Run cleaner
-        CleanupWorker cleaner = new CleanupWorker(preset, panel.getBibDatabaseContext().getMetaData().getFileDirectory(Globals.FILE_FIELD));
+        CleanupWorker cleaner = new CleanupWorker(preset,
+                panel.getBibDatabaseContext().getMetaData().getFileDirectory(Globals.FILE_FIELD), null,
+                Globals.journalAbbreviationLoader.getRepository());
         List<FieldChange> changes = cleaner.cleanup(entry);
 
         unsuccessfulRenames = cleaner.getUnsuccessfulRenames();