Fix to exclusively use disjointSpan() in C[xx]Xref

Author: idodeclare

src/org/opensolaris/opengrok/analysis/c/CXref.lex

@@ -102,7 +102,11 @@ Number = (0[xX][0-9a-fA-F]+|[0-9]+\.[0-9]+|[1-9][0-9]*)(([eE][+-]?[0-9]+)?[ufdlU
 /*{Hier}
         { out.write(Util.breadcrumbPath(urlPrefix+"defs=",yytext(),'.'));}
 */
-{Number} { out.write("<span class=\"n\">"); out.write(yytext()); out.write("</span>"); }
+{Number} {
+    disjointSpan(HtmlConsts.NUMBER_CLASS);
+    out.write(yytext());
+    disjointSpan(null);
+ }
 
  \\\" | \\\' { out.write(htmlize(yytext())); }
  \"     {

src/org/opensolaris/opengrok/analysis/c/CxxXref.lex

@@ -102,7 +102,11 @@ Number = (0[xX][0-9a-fA-F]+|[0-9]+\.[0-9]+|[1-9][0-9]*)(([eE][+-]?[0-9]+)?[ufdlU
 /*{Hier}
         { out.write(Util.breadcrumbPath(urlPrefix+"defs=",yytext(),'.'));}
 */
-{Number} { out.write("<span class=\"n\">"); out.write(yytext()); out.write("</span>"); }
+{Number} {
+    disjointSpan(HtmlConsts.NUMBER_CLASS);
+    out.write(yytext());
+    disjointSpan(null);
+ }
 
  \"     {
     pushSpan(STRING, HtmlConsts.STRING_CLASS);