[glib] mkenums: Do not check for None

[Emmanuele Bassi <ebassi src gnome org>]

commit 69389bdc3475e2b5621f69bb1da2b3781a52539c
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Jul 16 12:06:34 2017 +0100

    mkenums: Do not check for None
    
    The symprefix variable can only be a string.

 gobject/glib-mkenums.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gobject/glib-mkenums.in b/gobject/glib-mkenums.in
index 13ed24a..602f271 100755
--- a/gobject/glib-mkenums.in
+++ b/gobject/glib-mkenums.in
@@ -447,7 +447,7 @@ def process_file(curfilename):
                 enumshort = re.sub(r'([A-Z][A-Z])([A-Z][0-9a-z])', r'\1_\2', enumshort)
                 enumshort = enumshort.upper()
 
-                if symprefix is not None:
+                if symprefix:
                     enumname_prefix = symprefix.upper()
                 else:
                     enumname_prefix = idprefix.upper()