Fix stder -> stderr

gitk

@@ -7,7 +7,7 @@ exec wish "$0" -- "${1+$@}"
 # and distributed under the terms of the GNU General Public Licence,
 # either version 2, or (at your option) any later version.
 
-# CVS $Revision: 1.10 $
+# CVS $Revision: 1.11 $
 
 proc getcommits {rargs} {
     global commits commfd phase canv mainfont
@@ -17,7 +17,7 @@ proc getcommits {rargs} {
     set commits {}
     set phase getcommits
     if [catch {set commfd [open "|git-rev-tree $rargs" r]} err] {
-	puts stder "Error executing git-rev-tree: $err"
+	puts stderr "Error executing git-rev-tree: $err"
 	exit 1
     }
     fconfigure $commfd -blocking 0
@@ -261,7 +261,7 @@ Copyright
 
 Use and redistribute under the terms of the GNU General Public License
 
-(CVS $Revision: 1.10 $)} \
+(CVS $Revision: 1.11 $)} \
 	    -justify center -aspect 400
     pack $w.m -side top -fill x -padx 20 -pady 20
     button $w.ok -text Close -command "destroy $w"