Remove OOM checks: save_typebuf()

src/nvim/getchar.c

@@ -1177,12 +1177,11 @@ void free_typebuf(void)
  */
 static typebuf_T saved_typebuf[NSCRIPT];
 
-int save_typebuf(void)
+void save_typebuf(void)
 {
   init_typebuf();
   saved_typebuf[curscript] = typebuf;
   alloc_typebuf();
-  return OK;
 }
 
 static int old_char = -1;       /* character put back by vungetc() */
@@ -1262,8 +1261,7 @@ openscript (
       --curscript;
     return;
   }
-  if (save_typebuf() == FAIL)
-    return;
+  save_typebuf();
 
   /*
    * Execute the commands from the file right now when using ":source!"

src/nvim/getchar.h

@@ -33,7 +33,7 @@ int typebuf_maplen(void);
 void del_typebuf(int len, int offset);
 void alloc_typebuf(void);
 void free_typebuf(void);
-int save_typebuf(void);
+void save_typebuf(void);
 void save_typeahead(tasave_T *tp);
 void restore_typeahead(tasave_T *tp);
 void openscript(char_u *name, int directly);

src/nvim/main.c

@@ -1365,8 +1365,7 @@ scripterror:
               mch_errmsg("\"\n");
               mch_exit(2);
             }
-            if (save_typebuf() == FAIL)
-              mch_exit(2);                /* out of memory */
+            save_typebuf();
             break;
 
           case 't':               /* "-t {tag}" */