Bug 575543: [SourceEditor] Fix initial selection of linked rename
assists

Backport-of: 0bc1a02af36c5170a4ebdabe021758447af9a163
Change-Id: I21cbc87160dbda90f5c229e623dc43d423721ed2
diff --git a/ltk/org.eclipse.statet.ltk.ui/src/org/eclipse/statet/ltk/ui/sourceediting/assist/LinkedNamesAssistProposal.java b/ltk/org.eclipse.statet.ltk.ui/src/org/eclipse/statet/ltk/ui/sourceediting/assist/LinkedNamesAssistProposal.java
index 0909a87..e7a2a82 100644
--- a/ltk/org.eclipse.statet.ltk.ui/src/org/eclipse/statet/ltk/ui/sourceediting/assist/LinkedNamesAssistProposal.java
+++ b/ltk/org.eclipse.statet.ltk.ui/src/org/eclipse/statet/ltk/ui/sourceediting/assist/LinkedNamesAssistProposal.java
@@ -174,7 +174,7 @@
 				}
 			}
 			
-			viewer.setSelectedRange(selectionStartOffset, selectionStartOffset + selectionEndOffset);
+			viewer.setSelectedRange(selectionStartOffset, selectionEndOffset - selectionStartOffset);
 		}
 		catch (final BadLocationException e) {
 			StatusManager.getManager().handle(new Status(IStatus.ERROR, BUNDLE_ID, -1,