add some more kill paths to cppunit

Change-Id: I8610e99aecc725e349976746af6c8bd560ba2ffa

external/cppunit/coverity.patch

 --- misc/cppunit-1.13.1/src/cppunit/Asserter.cpp
 +++ misc/build/cppunit-1.13.1/src/cppunit/Asserter.cpp
-@@ -13,7 +13,7 @@ Asserter::fail( std::string message,
+@@ -6,6 +6,7 @@
+ CPPUNIT_NS_BEGIN
+ 
+ 
++// coverity[+kill]
+ void 
+ Asserter::fail( std::string message, 
+                 const SourceLine &sourceLine )
+@@ -13,7 +14,7 @@
    fail( Message( "assertion failed", message ), sourceLine );
  }