mlocate: fix crash on aarch64-musl

Current code call canonicalize_file_name without prior declaration in
system with musl libc. Thus the return value of canonicalize_file_name
is truncated from char* to int.

Use realpath instead.
Fix #25531

srcpkgs/mlocate/patches/musl_paths-h.patch

@@ -8,3 +8,12 @@
  
  #include <mntent.h>
  #include "error.h"
+@@ -388,7 +389,7 @@
+ 	  char *dir;
+ 
+ #ifndef PROC_MOUNTS_PATH
+-	  dir = canonicalize_file_name (me->mnt_dir);
++	  dir = realpath (me->mnt_dir, NULL);
+ 	  if (dir == NULL)
+ 	    dir = me->mnt_dir;
+ #else

srcpkgs/mlocate/template

@@ -1,7 +1,7 @@
 # Template file for 'mlocate'
 pkgname=mlocate
 version=0.26
-revision=4
+revision=5
 build_style=gnu-configure
 configure_args="--program-prefix=m --localstatedir=/var/lib"
 make_build_args="groupname=_mlocate"