t4205: replace .\+ with ..* in sed commands

OS X's sed only accepts basic regular expressions, which does not
allow the + quantifier.  However '..*' (anything, followed by zero or
more anything) is the same as '.\+' (one or more anything) and valid
in any regular expression language.

Signed-off-by: Brian Gernhardt <brian@gernhardtsoftware.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t4205-log-pretty-formats.sh

@@ -192,7 +192,7 @@ test_expect_success 'left alignment formatting with trunc' "
 message ..
 message ..
 add bar  Z
-$(commit_msg "" "8" ".\+$")
+$(commit_msg "" "8" "..*$")
 EOF
 	test_cmp expected actual
 "
@@ -310,7 +310,7 @@ test_expect_success 'left/right alignment formatting with stealing' "
 short long  long long
 message ..   A U Thor
 add bar      A U Thor
-$(commit_msg "" "8" ".\+$")   A U Thor
+$(commit_msg "" "8" "..*$")   A U Thor
 EOF
 	test_cmp expected actual
 "