gnulib-tool.py: Fix error

[Bruno Haible]

Running gnulib-tool.py with option --testdir, I get an error:

Traceback (most recent call last):
  File "/media/develdata/devel/GNULIB/gnulib-git/./gnulib-tool.py", line 948, 
in <module>
    main()
  File "/media/develdata/devel/GNULIB/gnulib-git/./gnulib-tool.py", line 684, 
in main
    testdir.execute()
  File "/media/develdata/devel/GNULIB/gnulib-git/pygnulib/GLTestDir.py", line 
358, in execute
    emit, uses_subdirs = self.emiter.lib_Makefile_am(destfile, modules,
  File "/media/develdata/devel/GNULIB/gnulib-git/pygnulib/GLEmiter.py", line 
667, in lib_Makefile_am
    module_indicator_prefix = self.config.getModuleIndicatorPrefix()
  File "/media/develdata/devel/GNULIB/gnulib-git/pygnulib/GLConfig.py", line 
830, in getModuleIndicatorPrefix
    return(getIncludeGuardPrefix(self))
NameError: name 'getIncludeGuardPrefix' is not defined

This patch fixes it.


2022-07-29  Bruno Haible  <bruno@clisp.org>

        gnulib-tool.py: Fix error (regression 2021-04-11).
        * pygnulib/GLConfig.py (GLConfig.getModuleIndicatorPrefix): Fix code.

diff --git a/pygnulib/GLConfig.py b/pygnulib/GLConfig.py
index ddabd001dd..fe219a36f6 100644
--- a/pygnulib/GLConfig.py
+++ b/pygnulib/GLConfig.py
@@ -827,7 +827,7 @@ class GLConfig(object):
 
     def getModuleIndicatorPrefix(self):
         '''Return module_indicator_prefix to use inside GLEmiter class.'''
-        return(getIncludeGuardPrefix(self))
+        return(self.getIncludeGuardPrefix())
 
     # Define macro_prefix methods.