Run go fmt on runner.

That got out of sync at some point.

Change-Id: I5a45f50f330ceb65053181afc916053a80aa2c5d
Reviewed-on: https://boringssl-review.googlesource.com/5541
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/test/runner/common.go b/ssl/test/runner/common.go
index 7b7a35b..ddd0468 100644
--- a/ssl/test/runner/common.go
+++ b/ssl/test/runner/common.go
@@ -82,7 +82,7 @@
 	extensionSignedCertificateTimestamp uint16 = 18
 	extensionExtendedMasterSecret       uint16 = 23
 	extensionSessionTicket              uint16 = 35
-	extensionCustom                     uint16 = 1234 // not IANA assigned
+	extensionCustom                     uint16 = 1234  // not IANA assigned
 	extensionNextProtoNeg               uint16 = 13172 // not IANA assigned
 	extensionRenegotiationInfo          uint16 = 0xff01
 	extensionChannelID                  uint16 = 30032 // not IANA assigned