Add explicit void to 0-parameter function definitions.

These are the errors output with:
  -Werror=implicit-int -Werror=implicit-function-declaration
  -Werror=int-conversion -Werror=strict-prototypes
  -Werror=old-style-definition

7 files changed, 10 insertions, 10 deletions

diff --git a/autocrypt/autocrypt_acct_menu.c b/autocrypt/autocrypt_acct_menu.c
index 80a82362..76bab1d2 100644
--- a/autocrypt/autocrypt_acct_menu.c
+++ b/autocrypt/autocrypt_acct_menu.c
@@ -127,7 +127,7 @@ static void account_entry (char *s, size_t slen, MUTTMENU *m, int num)
 		     entry, MUTT_FORMAT_ARROWCURSOR);
 }
 
-static MUTTMENU *create_menu ()
+static MUTTMENU *create_menu (void)
 {
   MUTTMENU *menu = NULL;
   AUTOCRYPT_ACCOUNT **accounts = NULL;
diff --git a/background.c b/background.c
index 37a3d335..d3975fa1 100644
--- a/background.c
+++ b/background.c
@@ -467,7 +467,7 @@ static void update_bg_menu (MUTTMENU *menu)
   }
 }
 
-static MUTTMENU *create_bg_menu ()
+static MUTTMENU *create_bg_menu (void)
 {
   MUTTMENU *menu = NULL;
   BACKGROUND_PROCESS *process;
diff --git a/charset.c b/charset.c
index 9b46b574..55961a7c 100644
--- a/charset.c
+++ b/charset.c
@@ -312,7 +312,7 @@ int mutt_chscmp (const char *s, const char *chs)
 			     a > b ? chs : buffer, MIN(a,b));
 }
 
-char *mutt_get_default_charset ()
+char *mutt_get_default_charset (void)
 {
   static char fcharset[SHORT_STRING];
   const char *c = AssumedCharset;
diff --git a/curs_lib.c b/curs_lib.c
index 2f5d0282..efa76ce6 100644
--- a/curs_lib.c
+++ b/curs_lib.c
@@ -596,7 +596,7 @@ static void error_history_dump (FILE *f)
   } while (cur != ErrorHistory.last);
 }
 
-void mutt_error_history_display ()
+void mutt_error_history_display (void)
 {
   static int in_process = 0;
   BUFFER *t = NULL;
@@ -790,7 +790,7 @@ out:
     mutt_clear_error ();
 }
 
-void mutt_init_windows ()
+void mutt_init_windows (void)
 {
   MuttHelpWindow = safe_calloc (sizeof (mutt_window_t), 1);
   MuttIndexWindow = safe_calloc (sizeof (mutt_window_t), 1);
@@ -801,7 +801,7 @@ void mutt_init_windows ()
 #endif
 }
 
-void mutt_free_windows ()
+void mutt_free_windows (void)
 {
   FREE (&MuttHelpWindow);
   FREE (&MuttIndexWindow);
diff --git a/menu.c b/menu.c
index f83356c4..2bd89adb 100644
--- a/menu.c
+++ b/menu.c
@@ -859,7 +859,7 @@ void mutt_set_menu_redraw_full (int menu_type)
     mutt_set_current_menu_redraw_full ();
 }
 
-void mutt_current_menu_redraw ()
+void mutt_current_menu_redraw (void)
 {
   MUTTMENU *current_menu;
 
diff --git a/monitor.c b/monitor.c
index 9653021d..63f0eb3b 100644
--- a/monitor.c
+++ b/monitor.c
@@ -105,7 +105,7 @@ static int mutt_poll_fd_remove(int fd)
   return 0;
 }
 
-static int monitor_init ()
+static int monitor_init (void)
 {
   if (INotifyFd == -1)
   {
@@ -132,7 +132,7 @@ static int monitor_init ()
   return 0;
 }
 
-static void monitor_check_free ()
+static void monitor_check_free (void)
 {
   if (!Monitor && INotifyFd != -1)
   {
diff --git a/pattern.c b/pattern.c
index 28a33d81..c6ee5366 100644
--- a/pattern.c
+++ b/pattern.c
@@ -2212,7 +2212,7 @@ static void make_pattern_entry (char *s, size_t slen, MUTTMENU *menu, int num)
 		     entry, MUTT_FORMAT_ARROWCURSOR);
 }
 
-static MUTTMENU *create_pattern_menu ()
+static MUTTMENU *create_pattern_menu (void)
 {
   MUTTMENU *menu = NULL;
   PATTERN_ENTRY *entries = NULL;