Fixes build against freetype-2.2, taken from
https://mail-index.netbsd.org/pkgsrc-bugs/2006/06/05/0005.html
thanks!
--- ./gfx/src/ps/nsType1.cpp.orig	2006-06-05 11:29:08.000000000 +0000
+++ ./gfx/src/ps/nsType1.cpp	2006-06-05 12:05:36.000000000 +0000
@@ -67,6 +67,12 @@
 
 #include "nsType1.h"
 
+#if FREETYPE_MAJOR > 2 || (FREETYPE_MAJOR == 2 && FREETYPE_MINOR > 1)
+#define constFT_Vector const FT_Vector
+#else
+#define constFT_Vector FT_Vector
+#endif
+
 static const PRUint16 type1_encryption_c1 = TYPE1_ENCRYPTION_C1;
 static const PRUint16 type1_encryption_c2 = TYPE1_ENCRYPTION_C2;
 
@@ -81,8 +87,8 @@
   int            wmode;
 } FT2PT1_info;
 
-static int cubicto(FT_Vector *aControlPt1, FT_Vector *aControlPt2, 
-                   FT_Vector *aEndPt, void *aClosure);
+static int cubicto(constFT_Vector *aControlPt1, constFT_Vector *aControlPt2, 
+                   constFT_Vector *aEndPt, void *aClosure);
 static int Type1CharStringCommand(unsigned char **aBufPtrPtr, int aCmd);
 static int Type1EncodeCharStringInt(unsigned char **aBufPtrPtr, int aValue);
 
@@ -173,7 +179,7 @@
 }
 
 static PRBool
-sideWidthAndBearing(FT_Vector *aEndPt, FT2PT1_info *aFti)
+sideWidthAndBearing(constFT_Vector *aEndPt, FT2PT1_info *aFti)
 {
   int aw = 0;
   int ah = 0;
@@ -216,7 +222,7 @@
 }
 
 static int
-moveto(FT_Vector *aEndPt, void *aClosure)
+moveto(constFT_Vector *aEndPt, void *aClosure)
 {
   FT2PT1_info *fti = (FT2PT1_info *)aClosure;
   FT_UShort upm = fti->face->units_per_EM;
@@ -253,7 +259,7 @@
 }
 
 static int
-lineto(FT_Vector *aEndPt, void *aClosure)
+lineto(constFT_Vector *aEndPt, void *aClosure)
 {
   FT2PT1_info *fti = (FT2PT1_info *)aClosure;
   FT_UShort upm = fti->face->units_per_EM;
@@ -279,7 +285,7 @@
 }
 
 static int
-conicto(FT_Vector *aControlPt, FT_Vector *aEndPt, void *aClosure)
+conicto(constFT_Vector *aControlPt, constFT_Vector *aEndPt, void *aClosure)
 {
   FT2PT1_info *ftinfo = (FT2PT1_info *)aClosure;
   FT_UShort upm = ftinfo->face->units_per_EM;
@@ -311,7 +317,7 @@
 }
 
 static int
-cubicto(FT_Vector *aControlPt1, FT_Vector *aControlPt2, FT_Vector *aEndPt,
+cubicto(constFT_Vector *aControlPt1, constFT_Vector *aControlPt2, constFT_Vector *aEndPt,
         void *aClosure)
 {
   FT2PT1_info *ftinfo = (FT2PT1_info *)aClosure;