ruby: Remove extra space before parenthesis.

diff --git a/ruby/ext/guestfs/extconf.rb b/ruby/ext/guestfs/extconf.rb
index 3413e04..cc053aa 100644 (file)
--- a/ruby/ext/guestfs/extconf.rb
+++ b/ruby/ext/guestfs/extconf.rb
@@ -22,7 +22,7 @@ extension_name = '_guestfs'
 
 dir_config(extension_name)
 
-unless have_header ("guestfs.h")
+unless have_header("guestfs.h")
   raise "<guestfs.h> not found"
 end
 unless have_library("guestfs", "guestfs_create", "guestfs.h")