File slang-libpng12-linker-flag.patch of Package slang

Index: slang-2.2.4/modules/Makefile.in
===================================================================
--- slang-2.2.4.orig/modules/Makefile.in
+++ slang-2.2.4/modules/Makefile.in
@@ -35,7 +35,7 @@ PCRE_LIB	= @PCRE_LIB@ -lpcre
 # If building the PNG module, you may need to set these
 #---------------------------------------------------------------------------
 PNG_INC	= @PNG_INC@
-PNG_LIB	= @PNG_LIB@ -lpng
+PNG_LIB	= @PNG_LIB@ -lpng12
 #---------------------------------------------------------------------------
 # If building the ICONV module, you may need to set these
 #---------------------------------------------------------------------------