[gitg] Add gitg-platform-support.vapi to extra dist

[Ignacio Casal Quinteiro <icq src gnome org>]

commit c2b23230f4e76adc65c3c2522aadff42383f4e35
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Dec 21 11:48:28 2015 +0100

    Add gitg-platform-support.vapi to extra dist

 Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index c906e9e..2cde59c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -114,7 +114,8 @@ EXTRA_DIST +=                                       \
        vapi/gtksourceview-3.0.vapi             \
        vapi/libpeas-1.0.vapi                   \
        vapi/libsoup-2.4.deps                   \
-       vapi/libsoup-2.4.vapi
+       vapi/libsoup-2.4.vapi                   \
+       vapi/gitg-platform-support.vapi
 
 %.typelib: %.gir
        $(INTROSPECTION_COMPILER) $(INTROSPECTION_COMPILER_ARGS) --includedir=$(top_srcdir) -o $@ $<