method ref: don't check method reference qualifier against functional interface (IDEA-141343)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/UnhandledExceptionsInQualifier.java

@@ -0,0 +1,17 @@
+class E1 extends Exception {}
+class E2 extends Exception {}
+class Test {
+  interface I {
+    void m() throws E1;
+  }
+
+  void a(I i) {}
+  Test b() throws E2 {return this;}
+  void c() throws E1 {}
+  void e() throws E1, E2 {}
+
+  void d() throws E2 {
+    a(b()::c);
+    a(<error descr="Unhandled exception: E2">this::e</error>);
+  }
+}