jsrf.h scalar deleting destructors return void *

They previously returned a pointer to the class type, but this isn't
accurate to the signature indicated by MSVC's name mangling.

ghidra/headerconvert.awk

@@ -5,7 +5,7 @@
 function fn_ptr(cls, signature,     ret, fname, args) {
 # Convert the given method signature to a function pointer
 	if ($1 ~ /^~/) # Special case for virtual destructor
-		return "\t\t" cls " * __attribute__((thiscall)) "\
+		return "\t\t void * __attribute__((thiscall)) "\
 			"(*scalar_deleting_destructor)("\
 				cls " *, "\
 				"BOOL"\