Bug 413212 - AssertionFailedException when right-click in Debug view

Not a fix, added a bit more context to the error.

Change-Id: Ib8c7234be47aa4cd2e01163fc929b7069e53447f
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.debug/+/190687
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Andrey Loskutov <loskutov@gmx.de>

org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/VariablesView.java

diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/VariablesView.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/VariablesView.java
index 4dc79e2..7e89642 100644
--- a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/VariablesView.java
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/VariablesView.java
@@ -1086,7 +1086,13 @@
 	protected void fillContextMenu(IMenuManager menu) {
 		menu.add(new Separator(IDebugUIConstants.EMPTY_VARIABLE_GROUP));
 		menu.add(new Separator(IDebugUIConstants.VARIABLE_GROUP));
-		menu.add(getAction(FIND_ACTION));
+		IAction findAction = getAction(FIND_ACTION);
+		if (findAction != null) {
+			menu.add(findAction);
+		} else {
+			DebugUIPlugin.log(new IllegalStateException("No action found for id: " + FIND_ACTION //$NON-NLS-1$
+					+ ", fGlobalActionMap: " + fGlobalActionMap)); //$NON-NLS-1$
+		}
 		ChangeVariableValueAction changeValueAction = (ChangeVariableValueAction)getAction("ChangeVariableValue"); //$NON-NLS-1$
 		if (changeValueAction.isApplicable()) {
 			menu.add(changeValueAction);