[file-roller] configure: don't give an error if libmagic could not be found

[Paolo Bacchilega <paobac src gnome org>]

commit a80adc5113bdbec058c175c69d3528a77b9b7e66
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Aug 27 20:24:16 2012 +0200

    configure: don't give an error if libmagic could not be found

 configure.ac |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3f78bc9..3c9b1d7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -201,9 +201,11 @@ int main () { magic_t m = magic_open(MAGIC_NONE); }
 ])],
 		       [AC_MSG_RESULT([yes])],
 		       [AC_MSG_RESULT([no])
-		        AC_MSG_ERROR([libmagic is needed for magic])])
+		        enable_magic=no])
 	LIBS="$save_LIBS"
+fi
 
+if test x"$enable_magic" = x"yes" ; then
 	MAGIC_CFLAGS=
 	MAGIC_LIBS=-lmagic