Fix some recently introduced byte-compiler warnings

* lisp/emulation/viper-util.el (viper-key-to-character):
* lisp/vc/vc-svn.el (vc-svn-dir-extra-headers): Fix warnings.
* lisp/net/eudc-export.el (eudc-batch-export-records-to-bbdb):
Fix buglet.

lisp/emulation/viper-util.el

@@ -1020,7 +1020,6 @@ Otherwise return the normal value."
 	 (string-to-char (symbol-name key)))
 	((and (listp key)
 	      (eq (car key) 'control)
-	      (symbol-name (nth 1 key))
 	      (= 1 (length (symbol-name (nth 1 key)))))
 	 (read (format "?\\C-%s" (symbol-name (nth 1 key)))))
 	(t key)))

lisp/net/eudc-export.el

@@ -210,7 +210,7 @@ LOCATION is used as the phone location for BBDB."
     (while (eudc-move-to-next-record)
       (and (overlays-at (point))
 	   (setq record (overlay-get (car (overlays-at (point))) 'eudc-record))
-	   (1+ nbrec)
+           (setq nbrec (1+ nbrec))
 	   (eudc-create-bbdb-record record t)))
     (message "%d records imported into BBDB" nbrec)))
 

lisp/vc/vc-svn.el

@@ -224,12 +224,10 @@ RESULT is a list of conses (FILE . STATE) for directory DIR."
   (let (process-file-side-effects)
     (vc-svn-command "*vc*" 0 nil "info"))
   (let ((repo
-	 (save-excursion
-	   (and (progn
-		  (set-buffer "*vc*")
-		  (goto-char (point-min))
-		  (re-search-forward "Repository Root: *\\(.*\\)" nil t))
-		(match-string 1)))))
+         (with-current-buffer "*vc*"
+           (goto-char (point-min))
+           (when (re-search-forward "Repository Root: *\\(.*\\)" nil t)
+             (match-string 1)))))
     (concat
      (cond (repo
 	    (concat