[Search Git Log] never show GPG signature (PatrickF1#287)

When the user has log.showSignature = true or the repo has showSignature = true, git log will check the GPG signature of signed commits. If the user does not have the public key for a signed commit, when triggering Search Git Log, raw GPG errors leak into the fzf window. We fix this by always passing --no-show-signature to the git log call.

Resolves PatrickF1#286.

functions/_fzf_search_git_log.fish

@@ -6,7 +6,7 @@ function _fzf_search_git_log --description "Search the output of git log and pre
         # %h gives you the abbreviated commit hash, which is useful for saving screen space, but we will have to expand it later below
         set log_fmt_str '%C(bold blue)%h%C(reset) - %C(cyan)%ad%C(reset) %C(yellow)%d%C(reset) %C(normal)%s%C(reset)  %C(dim normal)[%an]%C(reset)'
         set selected_log_lines (
-            git log --color=always --format=format:$log_fmt_str --date=short | \
+            git log --no-show-signature --color=always --format=format:$log_fmt_str --date=short | \
             _fzf_wrapper --ansi \
                 --multi \
                 --tiebreak=index \