Reset the colour correctly after assertion failures.

sdk/lib/debug/debug.cc

diff --git a/sdk/lib/debug/debug.cc b/sdk/lib/debug/debug.cc
index d855a3f..b61eb61 100644
--- a/sdk/lib/debug/debug.cc
+++ b/sdk/lib/debug/debug.cc
@@ -375,5 +375,5 @@
 	printer.write(function);
 	printer.write("\x1b[36m\n");
 	printer.format(format, arguments, argumentCount);
-	printer.write("\n");
+	printer.write("\033[0m\n");
 }