Imported from libpng-1.4.0beta48.tar
diff --git a/scripts/pngos2.def b/scripts/pngos2.def
index e30e162..dbb6659 100644
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.4.0beta47
+; Version 1.4.0beta48
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
@@ -231,6 +231,7 @@
   png_get_chunk_cache_max
   png_set_chunk_cache_max
   png_check_cHRM_fixed
+  png_calloc
 
 ; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
   png_libpng_ver