ports/textproc/p5-XML-LibXML
Dimitry Andric ea9006c8e8 textproc/p5-XML-LibXML: fix build with clang 16
Clang 16 has a new error about incompatible function types, which shows
up when building textproc/p5-XML-LibXML:

  perl-libxml-mm.c:142:18: error: incompatible function pointer types passing 'void (void *, void *, xmlChar *)' (aka 'void (void *, void *, unsigned char *)') to parameter of type 'xmlHashScanner' (aka 'void (*)(void *, void *, const unsigned char *)') [-Wincompatible-function-pointer-types]
                  xmlHashScan(r, PmmRegistryDumpHashScanner, NULL);
                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~
  /usr/local/include/libxml2/libxml/hash.h:213:22: note: passing argument to parameter 'f' here
                                           xmlHashScanner f,
                                                          ^
  perl-libxml-mm.c:234:44: error: incompatible function pointer types passing 'void (void *, xmlChar *)' (aka 'void (void *, unsigned char *)') to parameter of type 'xmlHashDeallocator' (aka 'void (*)(void *, const unsigned char *)') [-Wincompatible-function-pointer-types]
          if( xmlHashRemoveEntry(PmmREGISTRY, name, PmmRegistryHashDeallocator) )
                                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~
  /usr/local/include/libxml2/libxml/hash.h:160:47: note: passing argument to parameter 'f' here
                             xmlHashDeallocator f);
                                                ^
  perl-libxml-mm.c:301:38: error: incompatible function pointer types passing 'void *(void *, xmlChar *)' (aka 'void *(void *, unsigned char *)') to parameter of type 'xmlHashCopier' (aka 'void *(*)(void *, const unsigned char *)') [-Wincompatible-function-pointer-types]
          reg_copy = xmlHashCopy(PmmREGISTRY, PmmRegistryHashCopier);
                                              ^~~~~~~~~~~~~~~~~~~~~
  /usr/local/include/libxml2/libxml/hash.h:208:21: note: passing argument to parameter 'f' here
                                           xmlHashCopier f);
                                                         ^

In all three cases, the libxml2 callback functions require const xmlChar
pointers, so fix the parameters in their definitions.

PR:		271355
Approved by:	portmgr (build fix blanket)
MFH:		2023Q2
2023-05-18 13:36:36 +02:00
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