Require that all static analyzer issues have a category.  As part of this change,
consolidate some commonly used category strings into global references (more of this can be done, I just did a few).

Fixes <rdar://problem/11191537>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154121 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/StaticAnalyzer/Checkers/MallocSizeofChecker.cpp b/lib/StaticAnalyzer/Checkers/MallocSizeofChecker.cpp
index 4e10633..08a9da1 100644
--- a/lib/StaticAnalyzer/Checkers/MallocSizeofChecker.cpp
+++ b/lib/StaticAnalyzer/Checkers/MallocSizeofChecker.cpp
@@ -194,7 +194,9 @@
             PathDiagnosticLocation::createBegin(i->AllocCall->getCallee(),
                                                 BR.getSourceManager(), ADC);
 
-          BR.EmitBasicReport(D, "allocator sizeof operand mismatch", OS.str(),
+          BR.EmitBasicReport(D, "allocator sizeof operand mismatch",
+                             categories::UnixAPI,
+                             OS.str(),
                              L, Ranges.data(), Ranges.size());
         }
       }