fish: Make 'launch' function static.

This commit makes the launch function static and private to
'fish.c', and changes the generator so the function is no longer
called for the 'run/launch' command.

fish/fish.c

@@ -58,6 +58,7 @@ struct mp {
 static void add_drives (struct drv *drv);
 static void prepare_drives (struct drv *drv);
 static void mount_mps (struct mp *mp);
+static int launch (void);
 static void interactive (void);
 static void shell_script (void);
 static void script (int prompt);
@@ -77,18 +78,6 @@ int remote_control = 0;
 int exit_on_error = 1;
 int command_num = 0;
 
-int
-launch (guestfs_h *_g)
-{
-  assert (_g == g);
-
-  if (guestfs_is_config (g)) {
-    if (guestfs_launch (g) == -1)
-      return -1;
-  }
-  return 0;
-}
-
 static void __attribute__((noreturn))
 usage (int status)
 {
@@ -436,7 +425,7 @@ main (int argc, char *argv[])
    * guest and mount them.
    */
   if (next_prepared_drive > 1 || mps != NULL) {
-    if (launch (g) == -1) exit (EXIT_FAILURE);
+    if (launch () == -1) exit (EXIT_FAILURE);
     prepare_drives (drvs);
     mount_mps (mps);
   }
@@ -554,6 +543,16 @@ prepare_drives (struct drv *drv)
   }
 }
 
+static int
+launch (void)
+{
+  if (guestfs_is_config (g)) {
+    if (guestfs_launch (g) == -1)
+      return -1;
+  }
+  return 0;
+}
+
 static void
 interactive (void)
 {

fish/fish.h

@@ -60,7 +60,6 @@ extern void free_strings (char **argv);
 extern int count_strings (char *const *argv);
 extern void print_strings (char *const *argv);
 extern void print_table (char *const *argv);
-extern int launch (guestfs_h *);
 extern int is_true (const char *str);
 extern char **parse_string_list (const char *str);
 extern int xwrite (int fd, const void *buf, size_t len);

src/generator.ml

@@ -447,7 +447,7 @@ You probably don't want to call this function.")]
  *)
 
 let non_daemon_functions = test_functions @ [
-  ("launch", (RErr, []), -1, [FishAlias "run"; FishAction "launch"],
+  ("launch", (RErr, []), -1, [FishAlias "run"],
    [],
    "launch the qemu subprocess",
    "\