[PATCHv5 2/2] bash-completion: Fix __git_ps1 to work with "set -u"

[Andrew Sayers <andrew-git@pileofstuff.org>]

Define several variables in __git_ps1 to avoid errors under "set -u" semantics.

__git_ps1 seems to have been missed when the rest of the file was fixed in
25a31f8.

Signed-off-by: Andrew Sayers <andrew-git@pileofstuff.org>
---
 contrib/completion/git-completion.bash |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 6e6f458..337e4c9 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -221,8 +221,8 @@ __git_ps1 ()
 {
 	local g="$(__gitdir)"
 	if [ -n "$g" ]; then
-		local r
-		local b
+		local r=""
+		local b=""
 		if [ -f "$g/rebase-merge/interactive" ]; then
 			r="|REBASE-i"
 			b="$(cat "$g/rebase-merge/head-name")"
@@ -264,12 +264,12 @@ __git_ps1 ()
 			}
 		fi
 
-		local w
-		local i
-		local s
-		local u
-		local c
-		local p
+		local w=""
+		local i=""
+		local s=""
+		local u=""
+		local c=""
+		local p=""
 
 		if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
 			if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
-- 
1.7.0.4