compat/nedmalloc: fix spelling in comments

Correct some typos found using Lucas De Marchi's codespell tool.

Signed-off-by: Stefano Lattarini <[email protected]>
Signed-off-by: Jonathan Nieder <[email protected]>
Acked-by: Matthieu Moy <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: slattarini

compat/nedmalloc/malloc.c.h

@@ -4778,7 +4778,7 @@ void* dlmalloc(size_t bytes) {
 
 void dlfree(void* mem) {
   /*
-     Consolidate freed chunks with preceeding or succeeding bordering
+     Consolidate freed chunks with preceding or succeeding bordering
      free chunks, if they exist, and then place in a bin.  Intermixed
      with special cases for top, dv, mmapped chunks, and usage errors.
   */
@@ -5680,10 +5680,10 @@ int mspace_mallopt(int param_number, int value) {
 	Wolfram Gloger ([email protected]).
       * Use last_remainder in more cases.
       * Pack bins using idea from  [email protected]
-      * Use ordered bins instead of best-fit threshhold
+      * Use ordered bins instead of best-fit threshold
       * Eliminate block-local decls to simplify tracing and debugging.
       * Support another case of realloc via move into top
-      * Fix error occuring when initial sbrk_base not word-aligned.
+      * Fix error occurring when initial sbrk_base not word-aligned.
       * Rely on page size for units instead of SBRK_UNIT to
 	avoid surprises about sbrk alignment conventions.
       * Add mallinfo, mallopt. Thanks to Raymond Nijssen