Make ParseInit and ParseFinalize static to fix -Wmissing-prototypes in
dtd_grammar.c. Hide ParseFinalize to fix -Wunused-function since this feature
is not used by Wireshark.

Mark yymajor as _U_ since none of the lemon grammar files seem to use it in
their %syntax_error directive, this fixes -Wunused-parameter
--- a/lempar.c
+++ b/lempar.c
@@ -319,7 +319,7 @@ static int yyGrowStack(yyParser *p){
 
 /* Initialize a new parser that has already been allocated.
 */
-void ParseInit(void *yypRawParser ParseCTX_PDECL){
+static void ParseInit(void *yypRawParser ParseCTX_PDECL){
   yyParser *yypParser = (yyParser*)yypRawParser;
   ParseCTX_STORE
 #ifdef YYTRACKMAXSTACKDEPTH
@@ -426,7 +426,7 @@ static void yy_pop_parser_stack(yyParser *pParser){
 /*
 ** Clear all secondary memory allocations from the parser
 */
-void ParseFinalize(void *p){
+static void ParseFinalize(void *p){
   yyParser *pParser = (yyParser*)p;
   while( pParser->yytos>pParser->yystack ) yy_pop_parser_stack(pParser);
 #if YYSTACKDEPTH<=0
@@ -831,7 +831,7 @@ static void yy_parse_failed(
 */
 static void yy_syntax_error(
   yyParser *yypParser,           /* The parser */
-  int yymajor,                   /* The major type of the error token */
+  int yymajor _U_,               /* The major type of the error token */
   ParseTOKENTYPE yyminor         /* The minor type of the error token */
 ){
   ParseARG_FETCH
@@ -1060,6 +1060,7 @@ void Parse(
   return;
 }
 
+#if 0
 /*
 ** Return the fallback token corresponding to canonical token iToken, or
 ** 0 if iToken has no fallback.
@@ -1074,3 +1075,4 @@ int ParseFallback(int iToken){
 #endif
   return 0;
 }
+#endif