[libpng16] Quieted 116 (out of 288) -Wconversion compiler warnings by changing

flag definitions in pngpriv.h from 0xnnnn to 0xnnnnU and trivial changes
in png.c, pngread.c, and pngwutil.c.

1 files changed, 4 insertions, 4 deletions

diff --git a/pngread.c b/pngread.c
index b457fd027..a5374e5b8 100644
--- a/pngread.c
+++ b/pngread.c
@@ -1968,7 +1968,7 @@ make_gray_file_colormap(png_image_read_control *display)
    for (i=0; i<256; ++i)
       png_create_colormap_entry(display, i, i, i, i, 255, P_FILE);
 
-   return i;
+   return (int)i;
 }
 
 static int
@@ -1979,7 +1979,7 @@ make_gray_colormap(png_image_read_control *display)
    for (i=0; i<256; ++i)
       png_create_colormap_entry(display, i, i, i, i, 255, P_sRGB);
 
-   return i;
+   return (int)i;
 }
 #define PNG_GRAY_COLORMAP_ENTRIES 256
 
@@ -2033,7 +2033,7 @@ make_ga_colormap(png_image_read_control *display)
              P_sRGB);
    }
 
-   return i;
+   return (int)i;
 }
 
 #define PNG_GA_COLORMAP_ENTRIES 256
@@ -2058,7 +2058,7 @@ make_rgb_colormap(png_image_read_control *display)
       }
    }
 
-   return i;
+   return (int)i;
 }
 
 #define PNG_RGB_COLORMAP_ENTRIES 216