[gimp] app: Fix phantom dependency of libappoperation.a

[Daniel Sabo <daniels src gnome org>]

commit fda356bd10d91d4d25cf50d92ca585dae0d531e0
Author: Daniel Sabo <DanielSabo gmail com>
Date:   Sat Jun 29 09:54:03 2013 -0700

    app: Fix phantom dependency of libappoperation.a

 app/operations/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/app/operations/Makefile.am b/app/operations/Makefile.am
index bcee62a..d5998fd 100644
--- a/app/operations/Makefile.am
+++ b/app/operations/Makefile.am
@@ -164,6 +164,8 @@ libappoperations_sse4_a_CFLAGS = $(SSE4_1_EXTRA_CFLAGS)
 
 libappoperations_generic_a_SOURCES = $(libappoperations_generic_a_sources)
 
+libappoperations_a_SOURCES =
+
 libappoperations.a: libappoperations-generic.a \
                     libappoperations-sse2.a \
                     libappoperations-sse4.a