Add a header to libgps-2.90-fix

diff --git a/debian/patches/libgps-2.90-fix b/debian/patches/libgps-2.90-fix
index 499aac0..424a7e9 100644 (file)
--- a/debian/patches/libgps-2.90-fix
+++ b/debian/patches/libgps-2.90-fix
@@ -1,3 +1,4 @@
+Fix FTBFS against libgps-2.90.
 d5db05b5fd83c961237aea1f51b74cb448c221c7
 diff --git a/navit/attr_def.h b/navit/attr_def.h
 index d2ee03e..03fbe67 100644