Micharl Kohler's spelling fixes

src/dlmalloc.c

@@ -4251,7 +4251,7 @@ 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.
   */

src/ia64/ffi.c

@@ -225,7 +225,7 @@ ffi_prep_cif_machdep(ffi_cif *cif)
   int flags;
 
   /* Adjust cif->bytes to include space for the bits of the ia64_args frame
-     that preceeds the integer register portion.  The estimate that the 
+     that precedes the integer register portion.  The estimate that the
      generic bits did for the argument space required is good enough for the
      integer component.  */
   cif->bytes += offsetof(struct ia64_args, gp_regs[0]);