[libxslt] Fix compiler warnings in Python bindings

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 477f5779ed4b88ba052b6dfe5fe068bb72034556
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Sun Oct 8 14:26:56 2017 +0200

    Fix compiler warnings in Python bindings

 .gitignore       |    1 +
 python/libxslt.c |    5 ++---
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 791af6f..695cd11 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,6 +44,7 @@ libxslt/libxslt.la
 libxslt/xsltconfig.h
 ltmain.sh
 missing
+python/*.pyc
 python/.deps
 python/.libs
 python/Makefile
diff --git a/python/libxslt.c b/python/libxslt.c
index 8dd6c78..b552ed9 100644
--- a/python/libxslt.c
+++ b/python/libxslt.c
@@ -857,7 +857,7 @@ libxslt_xsltSaveResultToString(PyObject *self ATTRIBUTE_UNUSED, PyObject *args)
 static PyObject *libxslt_xsltPythonErrorFuncHandler = NULL;
 static PyObject *libxslt_xsltPythonErrorFuncCtxt = NULL;
 
-static void
+static void LIBXSLT_ATTR_FORMAT(2,3)
 libxslt_xsltErrorFuncHandler(void *ctx ATTRIBUTE_UNUSED, const char *msg,
                            ...)
 {
@@ -1180,7 +1180,6 @@ extern void initlibxml2mod(void);
 
 void initlibxsltmod(void) {
     static int initialized = 0;
-    PyObject *m;
 
 #ifdef MERGED_MODULES
     initlibxml2mod();
@@ -1188,7 +1187,7 @@ void initlibxsltmod(void) {
 
     if (initialized != 0)
        return;
-    m = Py_InitModule((char *)"libxsltmod", libxsltMethods);
+    Py_InitModule((char *)"libxsltmod", libxsltMethods);
     initialized = 1;
     /*
      * Specific XSLT initializations