Update mbed-trace dependency to latest release 1.2.1.

jupe · Jussi Vatjus-Anttila · commit 097c12ff8310 · 2016-06-10T09:44:48.000+01:00
Fix crash issue where application initialize trace prefix function and after that trace was called with parameters. Now there is unit test on place which covers this use-case also :)
diff --git a/net/mbed-trace.lib b/net/mbed-trace.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-trace/#ff8133f773ff064c47d0fdd8d6c78dac1d758a32
+https://github.com/ARMmbed/mbed-trace/#e419c488f4f8079fbd14f90e61b6018308e33d73

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-https://github.com/ARMmbed/mbed-trace/#ff8133f773ff064c47d0fdd8d6c78dac1d758a32`
	`1`	`+https://github.com/ARMmbed/mbed-trace/#e419c488f4f8079fbd14f90e61b6018308e33d73`