Fix a memory leak if compiled with Windows locale support

Ralf Junker <ralfjunker@gmx.de> pointed out a ouple of leaks in the
Windows locale support:
* libxslt/xslt.c: add cleanup code for the mutex in xsltUninit()
* libxslt/xsltlocale.c libxslt/xsltlocale.h: add a new cleanup function
  xsltFreeLocales
* libxslt/extensions.c: add a call to xsltFreeLocales in xsltCleanupGlobals

4 files changed, 21 insertions, 0 deletions

diff --git a/libxslt/extensions.c b/libxslt/extensions.c
index 6187b7af..f6f021eb 100644
--- a/libxslt/extensions.c
+++ b/libxslt/extensions.c
@@ -2289,6 +2289,7 @@ xsltCleanupGlobals(void)
 
     xmlFreeMutex(xsltExtMutex);
     xsltExtMutex = NULL;
+    xsltFreeLocales();
     xsltUninit();
 }
 
diff --git a/libxslt/xslt.c b/libxslt/xslt.c
index 8e8c414b..6293bb33 100644
--- a/libxslt/xslt.c
+++ b/libxslt/xslt.c
@@ -243,6 +243,10 @@ xsltInit (void) {
  */
 void
 xsltUninit (void) {
+#ifdef XSLT_LOCALE_WINAPI
+    xmlFreeRMutex(xsltLocaleMutex);
+    xsltLocaleMutex = NULL;
+#endif
     initialized = 0;
 }
 
diff --git a/libxslt/xsltlocale.c b/libxslt/xsltlocale.c
index 2caa2ec8..70a0b99f 100644
--- a/libxslt/xsltlocale.c
+++ b/libxslt/xsltlocale.c
@@ -67,6 +67,21 @@ static void xsltEnumSupportedLocales(void);
 #endif
 
 /**
+ * xsltFreeLocales:
+ *
+ * Cleanup function for the locale support on shutdown
+ */
+void
+xsltFreeLocales(void) {
+#ifdef XSLT_LOCALE_WINAPI
+    xmlRMutexLock(xsltLocaleMutex);
+    xmlFree(xsltLocaleList);
+    xsltLocaleList = NULL;
+    xmlRMutexUnlock(xsltLocaleMutex);
+#endif
+}
+
+/**
  * xsltNewLocale:
  * @languageTag: RFC 3066 language tag
  *
diff --git a/libxslt/xsltlocale.h b/libxslt/xsltlocale.h
index 59343b0a..9af4adce 100644
--- a/libxslt/xsltlocale.h
+++ b/libxslt/xsltlocale.h
@@ -53,5 +53,6 @@ xsltLocale xsltNewLocale(const xmlChar *langName);
 void xsltFreeLocale(xsltLocale locale);
 xsltLocaleChar *xsltStrxfrm(xsltLocale locale, const xmlChar *string);
 int xsltLocaleStrcmp(xsltLocale locale, const xsltLocaleChar *str1, const xsltLocaleChar *str2);
+void xsltFreeLocales(void);
 
 #endif /* __XML_XSLTLOCALE_H__ */