dev-python/protobuf-python: Fix google.protobuf.pyext._message.MessageMeta.

Closes: https://bugs.gentoo.org/651780

dev-python/protobuf-python/files/protobuf-python-3.5.2-google.protobuf.pyext._message.MessageMeta.patch

@@ -0,0 +1,26 @@
+https://github.com/google/protobuf/pull/4365
+
+--- /python/google/protobuf/pyext/message.cc
++++ /python/google/protobuf/pyext/message.cc
+@@ -402,12 +402,6 @@
+   return result.release();
+ }
+ 
+-static PyGetSetDef Getters[] = {
+-  {"_extensions_by_name", (getter)GetExtensionsByName, NULL},
+-  {"_extensions_by_number", (getter)GetExtensionsByNumber, NULL},
+-  {NULL}
+-};
+-
+ }  // namespace message_meta
+ 
+ PyTypeObject CMessageClass_Type = {
+@@ -440,7 +434,7 @@
+   0,                                   // tp_iternext
+   0,                                   // tp_methods
+   0,                                   // tp_members
+-  message_meta::Getters,               // tp_getset
++  0,                                   // tp_getset
+   0,                                   // tp_base
+   0,                                   // tp_dict
+   0,                                   // tp_descr_get

dev-python/protobuf-python/protobuf-python-3.5.2-r1.ebuild

@@ -25,6 +25,11 @@ RDEPEND="${DEPEND}
 
 S="${WORKDIR}/protobuf-${PV}/python"
 
+python_prepare_all() {
+	eapply -p2 "${FILESDIR}/${P}-google.protobuf.pyext._message.MessageMeta.patch"
+	distutils-r1_python_prepare_all
+}
+
 python_configure_all() {
 	mydistutilsargs=(--cpp_implementation)
 }