NULL-terminate the lists of autogenerated converters.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403482

src/audio/sdlgenaudiocvt.pl

@@ -338,6 +338,7 @@ sub buildTypeConverters {
     }
     print "#endif  /* !NO_CONVERTERS */\n";
 
+    print("    { 0, 0, NULL }\n");
     print "};\n\n\n";
 }
 
@@ -735,6 +736,7 @@ sub buildResamplers {
 
     print "#endif  /* !LESS_RESAMPLERS */\n";
     print "#endif  /* !NO_RESAMPLERS */\n";
+    print("    { 0, 0, 0, 0, NULL }\n");
     print "};\n\n";
 }