Bug 1135745 - Disable the reserved-id-macro macro in security/pkix; r=briansmith

security/pkix/warnings.mozbuild

@@ -9,6 +9,7 @@ if CONFIG['CLANG_CXX']:
     '-Wno-missing-prototypes',
     '-Wno-missing-variable-declarations',
     '-Wno-padded',
+    '-Wno-reserved-id-macro', # NSPR and NSS use reserved IDs in their include guards.
     '-Wno-shadow', # XXX: Clang's rules are too strict for constructors.
     '-Wno-weak-vtables', # We rely on the linker to merge the duplicate vtables.
   ]