[gnome-disk-utility] Fix desktop file generation

[Michael Catanzaro <mcatanzaro src gnome org>]

commit a65e7c36c5d3bdc2c12948b63387e810dbb25c6d
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Fri Mar 3 10:26:27 2017 -0600

    Fix desktop file generation
    
    Laney:  nah I think the problem is that $< is giving you the same filename each time
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779448

 data/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/Makefile.am b/data/Makefile.am
index e8f2767..a58fe70 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -11,7 +11,7 @@ desktop_in_files =                            \
 
 desktop_DATA = $(desktop_in_files:.desktop.in=.desktop)
 
-$(desktop_DATA): $(desktop_in_files)
+%.desktop: %.desktop.in
        $(AM_V_GEN) $(MSGFMT) --desktop --template $< -d $(top_srcdir)/po -o $@
 
 dbusservicedir = $(datadir)/dbus-1/services