MFH: r552936

print/ghostscript9-base: prepare for freetype2 update

- Backport of the same patch applied to print/ghostscript9-agpl-base

PR:		250375
Obtained from:	https://www.openwall.com/lists/oss-security/2020/10/20/7
Security:	CVE-2020-15999

Approved by:	ports-secteam (implicit)

print/ghostscript9-base/files/patch-git_41ef9a0_backport

@@ -0,0 +1,29 @@
+--- psi/fapi_ft.c.orig	2020-10-22 05:57:46 UTC
++++ psi/fapi_ft.c
+@@ -102,7 +102,7 @@ typedef struct FT_IncrementalRec_
+     FAPI_metrics_type metrics_type;        /* determines whether metrics are replaced, added, etc. */
+ } FT_IncrementalRec;
+ 
+-FT_CALLBACK_DEF( void* )
++static void*
+ FF_alloc( FT_Memory memory, long size)
+ {
+     gs_memory_t *mem = (gs_memory_t *)memory->user;
+@@ -110,7 +110,7 @@ FF_alloc( FT_Memory memory, long size)
+     return(gs_malloc (mem, size, 1, "FF_alloc"));
+ }
+ 
+-FT_CALLBACK_DEF( void* )
++static void*
+ FF_realloc(FT_Memory memory, long cur_size, long new_size, void* block)
+ {
+     gs_memory_t *mem = (gs_memory_t *)memory->user;
+@@ -130,7 +130,7 @@ FF_realloc(FT_Memory memory, long cur_size, long new_s
+     return(tmp);
+ }
+ 
+-FT_CALLBACK_DEF( void )
++static void
+ FF_free(FT_Memory memory, void* block)
+ {
+     gs_memory_t *mem = (gs_memory_t *)memory->user;