Handle newlines in error messages, fixes #1495

ospec/tests/test-ospec.js

@@ -149,6 +149,18 @@ o.spec("ospec", function() {
 		})
 	})
 
+	o.spec('stack trace cleaner', function() {
+		o('handles line breaks', function() {
+			try {
+				throw new Error('line\nbreak')
+			} catch(error) {
+				var trace = o.cleanStackTrace(error.stack)
+				o(trace).notEquals('break')
+				o(trace.includes("test-ospec.js")).equals(true)
+			}
+		})
+	})
+
 	o.spec("async promise", function() {
 		var a = 0, b = 0