Initialize LET variable bindings with NIL

- Always initialize LET variables
- Easy to misread what is initialized to what

Author: kilianmh

quicklisp/http.lisp

@@ -226,7 +226,8 @@
     (call-processor fun cbuf (start cbuf) (end cbuf))))
 
 (defun multi-cmatch (matchers cbuf)
-  (let (start end)
+  (let ((start nil)
+        (end nil))
     (dolist (matcher matchers (values start end))
       (multiple-value-bind (s e)
           (match matcher (data cbuf)

quicklisp/network.lisp

@@ -128,7 +128,7 @@
   closes the connection afterwareds via CLOSE-CONNECTION in an
   unwind-protect. See also WITH-CONNECTION.")
   (:implementation t
-    (let (connection)
+    (let ((connection nil))
       (unwind-protect
            (progn
              (setf connection (open-connection host port))