Fixing some of the issues found by clang static analyzer.

Bug: webrtc:8737
Change-Id: Ib436449c493336e7c35a72a96dc88cccdbb5bbaf
Reviewed-on: https://webrtc-review.googlesource.com/39200
Commit-Queue: Peter Hanspers <peterhanspers@webrtc.org>
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21607}
diff --git a/sdk/objc/Framework/Classes/PeerConnection/RTCEncodedImage.mm b/sdk/objc/Framework/Classes/PeerConnection/RTCEncodedImage.mm
index ef2840f..467f225 100644
--- a/sdk/objc/Framework/Classes/PeerConnection/RTCEncodedImage.mm
+++ b/sdk/objc/Framework/Classes/PeerConnection/RTCEncodedImage.mm
@@ -48,7 +48,7 @@
     _frameType = static_cast<RTCFrameType>(encodedImage._frameType);
     _rotation = static_cast<RTCVideoRotation>(encodedImage.rotation_);
     _completeFrame = encodedImage._completeFrame;
-    _qp = encodedImage.qp_ == -1 ? nil : @(encodedImage.qp_);
+    _qp = @(encodedImage.qp_);
     _contentType = (encodedImage.content_type_ == webrtc::VideoContentType::SCREENSHARE) ?
         RTCVideoContentTypeScreenshare :
         RTCVideoContentTypeUnspecified;