Remove nonnullret deadcode: xmalloc.

src/nvim/eval.c

@@ -18162,8 +18162,7 @@ void func_dump_profile(FILE *fd)
       --todo;
       fp = HI2UF(hi);
       if (fp->uf_profiling) {
-        if (sorttab != NULL)
-          sorttab[st_len++] = fp;
+        sorttab[st_len++] = fp;
 
         if (fp->uf_name[0] == K_SPECIAL)
           fprintf(fd, "FUNCTION  <SNR>%s()\n", fp->uf_name + 3);
@@ -18190,7 +18189,7 @@ void func_dump_profile(FILE *fd)
     }
   }
 
-  if (sorttab != NULL && st_len > 0) {
+  if (st_len > 0) {
     qsort((void *)sorttab, (size_t)st_len, sizeof(ufunc_T *),
         prof_total_cmp);
     prof_sort_list(fd, sorttab, st_len, "TOTAL", FALSE);

src/nvim/memline.c

@@ -1240,10 +1240,8 @@ theend:
       mf_put(mfp, hp, false, false);
     mf_close(mfp, false);           /* will also free(mfp->mf_fname) */
   }
-  if (buf != NULL) {
-    free(buf->b_ml.ml_stack);
-    free(buf);
-  }
+  free(buf->b_ml.ml_stack);
+  free(buf);
   if (serious_error && called_from_main)
     ml_close(curbuf, TRUE);
   else {
@@ -3279,10 +3277,7 @@ findswapname (
   /*
    * we try different names until we find one that does not exist yet
    */
-  if (dir_name == NULL)             /* out of memory */
-    fname = NULL;
-  else
-    fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name);
+  fname = makeswapname(buf_fname, buf->b_ffname, buf, dir_name);
 
   for (;; ) {
     if (fname == NULL)          /* must be out of memory */

src/nvim/misc1.c

@@ -3466,8 +3466,6 @@ get_cmd_output (
   i = (int)fread((char *)buffer, (size_t)1, (size_t)len, fd);
   fclose(fd);
   os_remove((char *)tempname);
-  if (buffer == NULL)
-    goto done;
   if (i != len) {
     EMSG2(_(e_notread), tempname);
     free(buffer);