fix: handle clipboard Error when image is in clipboard (#196)

Catch Error (e.g. IllegalAccessError from JAI's PNMImageWriter) thrown
during clipboard inspection in PasteAction.isEnabled(), log a warning,
and return false instead of crashing the Admin UI on login.
Signed-off-by: Joshua Dowell <joshua.dowell@centrallogic.com>

Author: Joshua Dowell

client/src/com/mirth/connect/client/ui/actions/PasteAction.java

@@ -17,11 +17,15 @@
 
 importjavax.swing.AbstractAction;
 
+importorg.apache.logging.log4j.LogManager;
+importorg.apache.logging.log4j.Logger;
+
 importcom.mirth.connect.client.ui.components.MirthTextInterface;
 
 /** Allows for Pasting in text components. */
 publicclassPasteActionextendsAbstractAction {
 
+privatestaticfinalLoggerlogger = LogManager.getLogger(PasteAction.class);
 MirthTextInterfacecomp;
 
 publicPasteAction(MirthTextInterfacecomp) {
@@ -46,6 +50,9 @@ public boolean isEnabled() {
 returnfalse;
  } catch (IllegalStateExceptione) {
 returnfalse;
+ } catch (Errore) {
+logger.warn("Could not check clipboard contents.", e);
+returnfalse;
  }
  } else {
 returnfalse;