[RFC/PATCH v2 8/8] completion: small optimization

No need to calculate a new $c with a space if we are not going to do
anything it with it.

There should be no functional changes, except that a word "foo " with no
suffixes can't be matched. But $cur cannot have a space at the end
anyway. So it's safe.

Based on the code from SZEDER Gábor.

Signed-off-by: Felipe Contreras <redacted>
---
 contrib/completion/git-completion.bash | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 82ea7b1..e5f862c 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash

@@ -240,11 +240,11 @@ __gitcomp ()
 		local c i=0 IFS=$' \t\n'
 		for c in $1; do
 			c="$c${4-}"
-			case $c in
-			--*=*|*.) ;;
-			*) c="$c " ;;
-			esac
 			if [[ $c == "$cur_"* ]]; then
+				case $c in
+				--*=*|*.) ;;
+				*) c="$c " ;;
+				esac
 				COMPREPLY[i++]="${2-}$c"
 			fi
 		done

-- 
1.8.0