#196. Fix crash in Consumer::getStats()

Scenario:

`Consumer::RemoveProfile()` is called with the profile pointed by `targetProfile`.
The corresponding entry is erased from `mapProfileRtpStream` container.

`targetProfile` is not being cleared, and here resides the bug.

Few RTP packets later a packet with the profile pointed by `targetProfile` comes
in `SendRtpPacket()`. We were waiting for it, so we make such profile the
`effectiveProfile`. At this point `effectiveProfile` points to a profile which
is not present in `mapProfileRtpStream` and this crash will happen on the next
call to `GetStats()`.

Author: jmillan

worker/src/RTC/Consumer.cpp

@@ -334,6 +334,10 @@ namespace RTC
 		{
 			SetEffectiveProfile(RtpEncodingParameters::Profile::NONE);
 		}
+		else if (this->targetProfile == profile)
+		{
+			this->targetProfile = this->effectiveProfile;
+		}
 
 		RecalculateTargetProfile();
 	}