Properly mark functions without arguments as (void)

Fixes compilation with -Werror=old-style-definition

src/browser.c

@@ -256,7 +256,7 @@ static void browse_draw_item(struct dir *n, int row) {
 }
 
 
-void browse_draw() {
+void browse_draw(void) {
   struct dir *t;
   const char *tmp;
   int selected = 0, i;

src/delete.c

@@ -98,7 +98,7 @@ static void delete_draw_error(void) {
 }
 
 
-void delete_draw() {
+void delete_draw(void) {
   browse_draw();
   switch(state) {
     case DS_CONFIRM:  delete_draw_confirm();  break;
@@ -211,7 +211,7 @@ delete_nxt:
 }
 
 
-void delete_process() {
+void delete_process(void) {
   struct dir *par;
 
   /* confirm */

src/dir_common.c

@@ -65,7 +65,7 @@ void dir_curpath_enter(const char *name) {
 
 
 /* removes last component from dir_curpath */
-void dir_curpath_leave() {
+void dir_curpath_leave(void) {
   char *tmp;
   if((tmp = strrchr(dir_curpath, '/')) == NULL)
     strcpy(dir_curpath, "/");
@@ -180,7 +180,7 @@ static void draw_error(char *cur, char *msg) {
 }
 
 
-void dir_draw() {
+void dir_draw(void) {
   float f;
   const char *unit;
 

src/exclude.c

@@ -89,7 +89,7 @@ int exclude_match(char *path) {
 }
 
 
-void exclude_clear() {
+void exclude_clear(void) {
   struct exclude *n, *l;
 
   for(n=excludes; n!=NULL; n=l) {

src/help.c

@@ -70,7 +70,7 @@ static const char *flags[FLAGS*2] = {
     "F", "Excluded firmlink",
 };
 
-void help_draw() {
+void help_draw(void) {
   int i, line;
 
   browse_draw();
@@ -203,7 +203,7 @@ int help_key(int ch) {
 }
 
 
-void help_init() {
+void help_init(void) {
   page = 1;
   start = 0;
   pstate = ST_HELP;

src/main.c

@@ -317,7 +317,7 @@ static void init_nc(void) {
 }
 
 
-void close_nc() {
+void close_nc(void) {
   if(ncurses_init) {
     erase();
     refresh();

src/quit.c

@@ -38,13 +38,13 @@ int quit_key(int ch) {
   return 0;
 }
 
-void quit_draw() {
+void quit_draw(void) {
   browse_draw();
 
   nccreate(4,30, "ncdu confirm quit");
   ncaddstr(2,2, "Really quit? (y/N)");
 }
 
-void quit_init() {
+void quit_init(void) {
   pstate = ST_QUIT;
 }

src/shell.c

@@ -51,7 +51,7 @@ static void set_level(void) {
   done++;
 }
 
-void shell_draw() {
+void shell_draw(void) {
   const char *full_path;
   int res;
 
@@ -95,6 +95,6 @@ void shell_draw() {
   pstate = ST_BROWSE;
 }
 
-void shell_init() {
+void shell_init(void) {
   pstate = ST_SHELL;
 }

src/util.c

@@ -146,7 +146,7 @@ char *fmtmode(unsigned short mode) {
 }
 
 
-void read_locale() {
+void read_locale(void) {
 #ifdef HAVE_LOCALE_H
   char *locale_thou_sep;
 #endif
@@ -267,7 +267,7 @@ static const struct {
   {0,0,0}
 };
 
-void uic_init() {
+void uic_init(void) {
   size_t i, j;
 
   start_color();