Asterisk in prototype

When having:
```
sub text_replace (**) {
}
```
We get the warning (as the `*` is not recognized in the prototype):
```
warning: member with no name found.
```
replacing the `*` with `any_type`

Author: albert-github

lib/Doxygen/Filter/Perl.pm

@@ -1083,6 +1083,7 @@ sub _ConvertTypeCode
     $logger->debug("### Entering _ConvertParameters ###");
 
     # Lets clean up the parameters list so that it will work with Doxygen
+    $code =~ s/\*/any_type /g;
     $code =~ s/\$\$/scalar_ref/g;
     $code =~ s/\@\$/array_ref/g;
     $code =~ s/\%\$/hash_ref/g;
@@ -1105,6 +1106,7 @@ sub _ConvertParameters
     $logger->debug("### Entering _ConvertParameters ###");
 
     # Lets clean up the parameters list so that it will work with Doxygen
+    $sParameters =~ s/\*/any_type /g;
     $sParameters =~ s/\$\$/scalar_ref /g;
     $sParameters =~ s/\@\$/array_ref /g;
     $sParameters =~ s/\%\$/hash_ref /g;