[evince] libdocument: Use a byte rather than an unsigned int for memset

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 3779d1e0d6ffd8c616954295e8dcc4e110660fa8
Author: Tobias Mueller <muelli cryptobitch de>
Date:   Wed Aug 16 19:06:00 2017 +0200

    libdocument: Use a byte rather than an unsigned int for memset
    
    Currently, gcc emits a warning for the constant used in the memset call.
    memset really sets a byte, so let's use one here, instead of the bigger
    unsigned integer.
    
    ev-document-misc.c:77:40: warning: conversion of unsigned constant value
    to negative integer [-Wsign-conversion]
        memset (data + (rowstride * i) + 4, 0xffffffff, nbytes);
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786415

 libdocument/ev-document-misc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libdocument/ev-document-misc.c b/libdocument/ev-document-misc.c
index a3ba592..bb1dd1a 100644
--- a/libdocument/ev-document-misc.c
+++ b/libdocument/ev-document-misc.c
@@ -70,7 +70,7 @@ create_thumbnail_frame (int        width,
        gdk_pixbuf_fill (retval, 0x000000ff);
        if (fill_bg) {
                for (i = 1; i < height_r + 1; i++)
-                       memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
+                       memset (data + (rowstride * i) + 4, 0xff, width_r * 4);
        }
 
        /* copy the source pixbuf */