$OpenBSD: patch-src_osgDB_ConvertBase64_cpp,v 1.1 2019/07/29 18:17:43 cwen Exp $

Fix narrowing errors on archs where char is unsigned by default (ppc, arm)

Index: src/osgDB/ConvertBase64.cpp
--- src/osgDB/ConvertBase64.cpp.orig
+++ src/osgDB/ConvertBase64.cpp
@@ -28,7 +28,7 @@ namespace osgDB
 
     int base64_decode_value(char value_in)
     {
-        static const char decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
+        static const signed char decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
         static const char decoding_size = sizeof(decoding);
         value_in -= 43;
         if (value_in < 0 || value_in > decoding_size) return -1;
