[libxslt] Make some symbols static

[Nick Wellnhofer <nwellnhof src gnome org>]

commit fbf246ca9bdd9f60de95d87eeda9d3092d64385b
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Fri Dec 2 15:35:31 2016 +0100

    Make some symbols static

 libxslt/transform.c |    9 +++++----
 libxslt/variables.c |    2 +-
 2 files changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/libxslt/transform.c b/libxslt/transform.c
index b3fce80..fca5554 100644
--- a/libxslt/transform.c
+++ b/libxslt/transform.c
@@ -468,7 +468,7 @@ xsltGetXIncludeDefault(void) {
     return(xsltDoXIncludeDefault);
 }
 
-unsigned long xsltDefaultTrace = (unsigned long) XSLT_TRACE_ALL;
+static unsigned long xsltDefaultTrace = (unsigned long) XSLT_TRACE_ALL;
 
 /**
  * xsltDebugSetDefaultTrace:
@@ -767,8 +767,9 @@ xsltFreeTransformContext(xsltTransformContextPtr ctxt) {
  *                                                                     *
  ************************************************************************/
 
-xmlNodePtr xsltCopyTree(xsltTransformContextPtr ctxt,
-                        xmlNodePtr node, xmlNodePtr insert, int literal);
+static xmlNodePtr
+xsltCopyTree(xsltTransformContextPtr ctxt, xmlNodePtr node, xmlNodePtr insert,
+             int literal);
 
 /**
  * xsltAddChild:
@@ -1812,7 +1813,7 @@ xsltCopyTreeInternal(xsltTransformContextPtr ctxt,
  *
  * Returns a pointer to the new tree, or NULL in case of error
  */
-xmlNodePtr
+static xmlNodePtr
 xsltCopyTree(xsltTransformContextPtr ctxt, xmlNodePtr node,
             xmlNodePtr insert, int literal)
 {
diff --git a/libxslt/variables.c b/libxslt/variables.c
index e1a80ee..60b46ea 100644
--- a/libxslt/variables.c
+++ b/libxslt/variables.c
@@ -40,7 +40,7 @@
 const xmlChar *xsltDocFragFake = (const xmlChar *) " fake node libxslt";
 #endif
 
-const xmlChar *xsltComputingGlobalVarMarker =
+static const xmlChar *xsltComputingGlobalVarMarker =
  (const xmlChar *) " var/param being computed";
 
 #define XSLT_VAR_GLOBAL (1<<0)