File fix-protobuf-include.patch of Package purple-hangouts

--- purple-hangouts-0.0.0+hg20160528.251/Makefile	2016-05-29 04:24:51.173080216 +0200
+++ purple-hangouts-0.0.0+hg20160528.251/Makefile.orig	2016-05-29 04:18:12.581957465 +0200
@@ -37,7 +37,7 @@
   endif
 
   ifeq ($(shell $(PKG_CONFIG) --exists libprotobuf-c && echo "true"),true)
-    PROTOBUF_OPTS := $(shell $(PKG_CONFIG) --cflags --libs libprotobuf-c)
+    PROTOBUF_OPTS := $(shell $(PKG_CONFIG) --cflags --libs libprotobuf-c) -I/usr/include/google
   else
     PROTOBUF_OPTS := -I/usr/include/google -I/usr/include/google/protobuf-c -lprotobuf-c
   endif