Fixed null pointer exception

diff --git a/src/main/java/eu/svjatoslav/inspector/java/structure/MethodDescriptor.java b/src/main/java/eu/svjatoslav/inspector/java/structure/MethodDescriptor.java
index d411cb0..efe6992 100755 (executable)
--- a/src/main/java/eu/svjatoslav/inspector/java/structure/MethodDescriptor.java
+++ b/src/main/java/eu/svjatoslav/inspector/java/structure/MethodDescriptor.java
@@ -141,8 +141,9 @@ public class MethodDescriptor implements GraphElement,
     protected int getOutsideVisibleReferencesCount() {
         int result = 0;
 
-        if (returnType.isVisible())
-            result++;
+        if (returnType != null)
+            if (returnType.isVisible())
+                result++;
 
         for (final ClassDescriptor classDescriptor : argumentTypes)
             if (classDescriptor.isVisible())