[release] goTools: don't fail gocode installation if gocode is not already running

Fixes golang/vscode-go#355
Fixes golang/vscode-go#362

Change-Id: Ifdf229ce52a6a4b1a2e4f0a28ac5596405ff4c56
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/242780
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
(cherry picked from commit db1d1b3da6173d033c158b5586efe30374ff4d0a)
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/243898
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
diff --git a/src/goTools.ts b/src/goTools.ts
index eaa2b87..91d72dc 100644
--- a/src/goTools.ts
+++ b/src/goTools.ts
@@ -194,7 +194,7 @@
 					return `Installing gocode aborted as existing process cannot be closed. Please kill the running process for gocode and try again.`;
 			} catch (err) {
-				return `Failed to close gocode process: ${err}.`;
+				// This may fail if gocode isn't already running.
 			return '';