Fix #70: Completion list can be 'dirty' before you type something to …

…trigger autocomopletion (@hshafie)

AutoComplete/src/main/java/org/fife/ui/autocomplete/AutoCompletePopupWindow.java

@@ -751,7 +751,7 @@ public void setVisible(boolean visible) {
 			super.setVisible(visible);
 
 			// Some languages, such as Java, can use quite a lot of memory
-			// when displaying hundreds of completion choices.  We pro-actively
+			// when displaying hundreds of completion choices.  We proactively
 			// clear our list model here to make them available for GC.
 			// Otherwise, they stick around, and consider the following:  a
 			// user starts code-completion for Java 5 SDK classes, then hides
@@ -764,6 +764,9 @@ public void setVisible(boolean visible) {
 				lastSelection = list.getSelectedValue();
 				model.clear();
 			}
+			else {
+				list.repaint(); // https://github.com/bobbylight/AutoComplete/issues/70
+			}
 
 			// Must set descWindow's visibility one way or the other each time,
 			// because of the way child JWindows' visibility is handled - in