fixed compilation warning changed xmlWarningMsg so ctxt->errNo is not set

* dict.c: fixed compilation warning
* parser.c: changed xmlWarningMsg so ctxt->errNo is not set
* xmllint.c: changed to return non-zero status if error
  on xinclude processing
* xmlsave.c: minor deletion of a redundant condition statement
diff --git a/dict.c b/dict.c
index 8b1b121..c8e06d3 100644
--- a/dict.c
+++ b/dict.c
@@ -82,13 +82,13 @@
 static int xmlDictInitialized = 0;
 
 /**
- * xmlInitializeCatalog:
+ * xmlInitializeDict:
  *
  * Do the dictionary mutex initialization.
  * this function is not thread safe, initialization should
  * preferably be done once at startup
  */
-static int xmlInitializeDict() {
+static int xmlInitializeDict(void) {
     if (xmlDictInitialized)
         return(1);