msvcrt: Fixed symbol unmangling for template-parameter-?? form, as well as test.

dlls/msvcrt/tests/cpp.c

@@ -982,7 +982,7 @@ static void test_demangle(void)
 { "?Qux@Bar@@0PAP6AHPAV1@AAH1PAH@ZA", "private: static int (__cdecl** Bar::Qux)(class Bar *,int &,int &,int *)" },
 { "?Qux@Bar@@0PAP6AHPAV1@AAH1PAH@ZA", "Bar::Qux", 0x1800},
 {"?$AAA@$DBAB@", "AAA<`template-parameter257'>"},
-{"?$AAA@$D?4@", "AAA<`template-parameter-5'>"},
+{"?$AAA@?C@", "AAA<`template-parameter-2'>"},
 {"?$AAA@PAUBBB@@", "AAA<struct BBB *>"},
 {"??$ccccc@PAVaaa@@@bar@bb@foo@@DGPAV0@PAV0@PAVee@@IPAPAVaaa@@1@Z", "private: static class bar * __stdcall foo::bb::bar::ccccc<class aaa *>(class bar *,class ee *,unsigned int,class aaa **,class ee *)"},
     };

dlls/msvcrt/undname.c

@@ -759,7 +759,16 @@ static BOOL demangle_datatype(struct parsed_symbol* sym, struct datatype_t* ct,
         break;
     case '?':
         /* not all the time is seems */
-        if (!get_modified_type(ct, sym, pmt_ref, '?')) goto done;
+        if (in_args)
+        {
+            const char*   ptr;
+            if (!(ptr = get_number(sym))) goto done;
+            ct->left = str_printf(sym, "`template-parameter-%s'", ptr);
+        }
+        else
+        {
+            if (!get_modified_type(ct, sym, pmt_ref, '?')) goto done;
+        }
         break;
     case 'A': /* reference */
     case 'B': /* volatile reference */