fix expected IProblem type which changed in J8 compiler
diff --git a/org.eclipse.ajdt.core/src/org/eclipse/ajdt/core/parserbridge/AJCompilationUnitProblemFinder.java b/org.eclipse.ajdt.core/src/org/eclipse/ajdt/core/parserbridge/AJCompilationUnitProblemFinder.java
index 16c78f8..c6eb5ae 100644
--- a/org.eclipse.ajdt.core/src/org/eclipse/ajdt/core/parserbridge/AJCompilationUnitProblemFinder.java
+++ b/org.eclipse.ajdt.core/src/org/eclipse/ajdt/core/parserbridge/AJCompilationUnitProblemFinder.java
@@ -602,7 +602,7 @@
                 }
             }
             
-            if (id == IProblem.TypeMismatch &&
+            if (id == IProblem.ReturnTypeMismatch &&
                     numArgs == 2 &&
                     typeAtPositionIsArg(categorizedProblem, unit, firstArg)) {
                 if (findLastSegment(getITDTargetType(categorizedProblem, unit, isJavaFileInAJEditor)).equals(findLastSegment(secondArg))) {