mutt: Fix a few small compiler warnings. (See #3638)

[Brendan Cully]

changeset: 6468:c60fed102d79
user:      Kevin McCarthy <ke...@8t8.us>
date:      Wed Jul 22 19:23:12 2015 -0700
link:      http://dev.mutt.org/hg/mutt/rev/c60fed102d79

Fix a few small compiler warnings.  (See #3638)

In certain configurations, unused variables and labels were causing
warnings.

Add a missing "#include <netinet/in.h>" to pop_lib.c.

diffs (43 lines):

diff -r 704e0622cc67 -r c60fed102d79 imap/message.c
--- a/imap/message.c    Tue Jul 21 12:41:13 2015 -0700
+++ b/imap/message.c    Wed Jul 22 19:23:12 2015 -0700
@@ -60,7 +60,6 @@
 int imap_read_headers (IMAP_DATA* idata, int msgbegin, int msgend)
 {
   CONTEXT* ctx;
-  char buf[LONG_STRING];
   char *hdrreq = NULL;
   FILE *fp;
   char tempfile[_POSIX_PATH_MAX];
@@ -75,6 +74,7 @@
   int retval = -1;
 
 #if USE_HCACHE
+  char buf[LONG_STRING];
   unsigned int *uid_validity = NULL;
   unsigned int *puidnext = NULL;
   unsigned int uidnext = 0;
diff -r 704e0622cc67 -r c60fed102d79 keymap.c
--- a/keymap.c  Tue Jul 21 12:41:13 2015 -0700
+++ b/keymap.c  Wed Jul 22 19:23:12 2015 -0700
@@ -456,7 +456,9 @@
     if (menu == MENU_EDITOR && tmp.ch == -2)
       continue;
 
+#ifdef USE_IMAP
   gotkey:
+#endif
     LastKey = tmp.ch;
     if (LastKey < 0)
       return -1;
diff -r 704e0622cc67 -r c60fed102d79 pop_lib.c
--- a/pop_lib.c Tue Jul 21 12:41:13 2015 -0700
+++ b/pop_lib.c Wed Jul 22 19:23:12 2015 -0700
@@ -33,6 +33,7 @@
 #include <ctype.h>
 #include <netdb.h>
 #include <errno.h>
+#include <netinet/in.h>
 
 /* given an POP mailbox name, return host, port, username and password */
 int pop_parse_path (const char* path, ACCOUNT* acct)