Update bogus tests that relied on some sort of quirk revealed by the nom update.

Author: emilio

tests/headers/issue-674-1.hpp

@@ -1,4 +1,4 @@
-// bindgen-flags: --enable-cxx-namespaces --whitelist-type CapturingContentInfo --opaque-type 'mozilla::Maybe' -- -- -std=c++14
+// bindgen-flags: --enable-cxx-namespaces --whitelist-type CapturingContentInfo --opaque-type 'mozilla::Maybe' -- -std=c++14
 
 namespace mozilla {
 template <class T> class Maybe { using ValueType = T; };

tests/headers/issue-674-2.hpp

@@ -1,4 +1,4 @@
-// bindgen-flags: --enable-cxx-namespaces --whitelist-type StaticRefPtr --opaque-type 'JS::Rooted' -- -- -std=c++14
+// bindgen-flags: --enable-cxx-namespaces --whitelist-type StaticRefPtr --opaque-type 'JS::Rooted' -- -std=c++14
 
 namespace JS {
 template <typename T> class Rooted { using ElementType = T; };

tests/headers/issue-674-3.hpp

@@ -1,4 +1,4 @@
-// bindgen-flags: --enable-cxx-namespaces --whitelist-type nsCSSValue --opaque-type 'nsRefPtrHashtable' -- -- -std=c++14
+// bindgen-flags: --enable-cxx-namespaces --whitelist-type nsCSSValue --opaque-type 'nsRefPtrHashtable' -- -std=c++14
 
 template <class PtrType> class nsRefPtrHashtable {
   typedef PtrType *UserDataType;