test: yaml-parser: Use write() instead of fwrite()

There's no point in wrapping a fd into a FILE to then only call fwrite()
and fclose(). Use write() and close() directly.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

test/yaml-parser.cpp

@@ -49,10 +49,11 @@ protected:
 		if (fd == -1)
 			return false;
 
-		FILE *fh = fdopen(fd, "w");
-		fputs(content.c_str(), fh);
+		int ret = write(fd, content.c_str(), content.size());
+		close(fd);
 
-		fclose(fh);
+		if (ret != static_cast<int>(content.size()))
+			return false;
 
 		return true;
 	}