No OOM in vim_strsave_escape_csi()

src/nvim/eval.c

@@ -8295,14 +8295,12 @@ static void f_feedkeys(typval_T *argvars, typval_T *rettv)
     /* Need to escape K_SPECIAL and CSI before putting the string in the
      * typeahead buffer. */
     keys_esc = vim_strsave_escape_csi(keys);
-    if (keys_esc != NULL) {
     ins_typebuf(keys_esc, (remap ? REMAP_YES : REMAP_NONE),
         typebuf.tb_len, !typed, FALSE);
     free(keys_esc);
     if (vgetc_busy)
       typebuf_was_filled = TRUE;
   }
-  }
 }
 
 /*

src/nvim/getchar.c

@@ -26,6 +26,7 @@
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_getln.h"
 #include "nvim/farsi.h"
+#include "nvim/func_attr.h"
 #include "nvim/main.h"
 #include "nvim/mbyte.h"
 #include "nvim/memline.h"
@@ -3760,17 +3761,13 @@ static bool is_user_input(int k)
 /*
  * Copy "p" to allocated memory, escaping K_SPECIAL and CSI so that the result
  * can be put in the typeahead buffer.
- * Returns NULL when out of memory.
  */
 char_u *vim_strsave_escape_csi(char_u *p)
 {
-  char_u      *res;
-  char_u      *s, *d;
-
   /* Need a buffer to hold up to three times as much. */
-  res = xmalloc(STRLEN(p) * 3 + 1);
-  d = res;
-  for (s = p; *s != NUL; ) {
+  char_u *res = xmalloc(STRLEN(p) * 3 + 1);
+  char_u *d = res;
+  for (char_u *s = p; *s != NUL; ) {
     if (s[0] == K_SPECIAL && s[1] != NUL && s[2] != NUL) {
       /* Copy special key unmodified. */
       *d++ = *s++;

src/nvim/ops.c

@@ -986,8 +986,6 @@ do_execreg (
           return FAIL;
       }
       escaped = vim_strsave_escape_csi(y_current->y_array[i]);
-      if (escaped == NULL)
-        return FAIL;
       retval = ins_typebuf(escaped, remap, 0, TRUE, silent);
       free(escaped);
       if (retval == FAIL)