From 23c093fc38326d98a58dd482ed6afa4b02d2a004 Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Fri, 21 Nov 2014 08:41:39 +0100
Subject: [PATCH] Minor.

---
 src/base/ftobjs.c  | 1 +
 src/pfr/pfrsbit.c  | 2 +-
 src/sfnt/pngshim.c | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/base/ftobjs.c b/src/base/ftobjs.c
index cc561054a..315ad129c 100644
--- a/src/base/ftobjs.c
+++ b/src/base/ftobjs.c
@@ -4107,6 +4107,7 @@
 
       FT_Bitmap_New( &bitmap );
 
+      /* this also converts the bitmap flow to `down' (i.e., pitch > 0) */
       err = FT_Bitmap_Convert( library, &slot->bitmap, &bitmap, 1 );
       if ( !err )
       {
diff --git a/src/pfr/pfrsbit.c b/src/pfr/pfrsbit.c
index 2da150070..eb7507f3f 100644
--- a/src/pfr/pfrsbit.c
+++ b/src/pfr/pfrsbit.c
@@ -59,7 +59,7 @@
 
     if ( !decreasing )
     {
-      writer->line += writer->pitch * ( target->rows-1 );
+      writer->line += writer->pitch * ( target->rows - 1 );
       writer->pitch = -writer->pitch;
     }
   }
diff --git a/src/sfnt/pngshim.c b/src/sfnt/pngshim.c
index cfa64812d..9bfcc2a77 100644
--- a/src/sfnt/pngshim.c
+++ b/src/sfnt/pngshim.c
@@ -276,6 +276,7 @@
         goto DestroyExit;
       }
 
+      /* this doesn't overflow: 0x7FFF * 0x7FFF * 4 < 2^32 */
       size = map->rows * map->pitch;
 
       error = ft_glyphslot_alloc_bitmap( slot, size );