[gobject-introspection] g-ir-tool-template: Fix a coding error that hooks up pdb in any build

[Mikhail Zabaluev <mzabaluev src gnome org>]

commit 61100f7773e39f7392da6f73c59703dd36f437e0
Author: Mikhail Zabaluev <mikhail zabaluev gmail com>
Date:   Sun Nov 1 20:09:35 2015 +0200

    g-ir-tool-template: Fix a coding error that hooks up pdb in any build
    
    A condition was supposed to test if GI_SCANNER_DEBUG environment
    variable is unset or empty, but instead always evaluated to true.
    This results in any build pausing in pdb whenever an uncaught exception
    occurs in a g-ir-* tool.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=757443

 tools/g-ir-tool-template.in |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/tools/g-ir-tool-template.in b/tools/g-ir-tool-template.in
index f80730e..edc68a4 100644
--- a/tools/g-ir-tool-template.in
+++ b/tools/g-ir-tool-template.in
@@ -31,9 +31,9 @@ if sys.version_info.major < 3:
 else:
     import builtins
 
-debug = os.getenv('GI_SCANNER_DEBUG', '').split(',')
+debug = os.getenv('GI_SCANNER_DEBUG')
 if debug:
-    if 'pydevd' in debug:
+    if 'pydevd' in debug.split(','):
         # http://pydev.org/manual_adv_remote_debugger.html
         pydevdpath = os.getenv('PYDEVDPATH', None)
         if pydevdpath is not None and os.path.isdir(pydevdpath):