SH-3798 FIX avatar skins look dull

Wearable parsing error caused last texture in some assets to fail to parse.
Parser now does not throw an error if the wearable does not end in a newline

indra/llappearance/llwearable.cpp

@@ -504,7 +504,7 @@ BOOL LLWearable::getNextPopulatedLine(std::istream& input_stream, char* buffer,
 	}
 	while (input_stream.good() && buffer[0]=='\0');
 
-	return input_stream.good(); 
+	return (buffer[0] != '\0'); 
 }
 
 
@@ -826,4 +826,4 @@ std::string terse_F32_to_string(F32 f)
 		r.erase(0, 1);
 	}
 	return r;
-}
+}