[libxml2] Integer signed/unsigned type mismatch in xmlParserInputGrow()

[Daniel Veillard <veillard src gnome org>]

commit d433ea6c83f00c4ccdad4413a2f5c83e641c3992
Author: David Kilzer <ddkilzer apple com>
Date:   Wed May 18 14:52:59 2016 -0700

    Integer signed/unsigned type mismatch in xmlParserInputGrow()
    
    For https://bugzilla.gnome.org/show_bug.cgi?id=766635
    
    * parserInternals.c:
    (xmlParserInputGrow): Change 'ret' type to 'int' to match the
    return type of xmlParserInputBufferGrow().

 parserInternals.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/parserInternals.c b/parserInternals.c
index 2b8646c..6c3995c 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -294,7 +294,7 @@ xmlParserInputRead(xmlParserInputPtr in ATTRIBUTE_UNUSED, int len ATTRIBUTE_UNUS
  */
 int
 xmlParserInputGrow(xmlParserInputPtr in, int len) {
-    size_t ret;
+    int ret;
     size_t indx;
     const xmlChar *content;