Fix ixallocx_prof_sample() argument order reversal.

Fix ixallocx_prof() to pass usize_max and zero to ixallocx_prof_sample()
in the correct order.

ChangeLog

@@ -33,6 +33,8 @@ brevity.  Much more detail can be found in the git revision history:
     the result throughout the relevant functions that handle an allocation
     event.  Also add a missing check in prof_realloc().  These fixes protect
     allocation events against concurrent prof_active changes.
+  - Fix ixallocx_prof() to pass usize_max and zero to ixallocx_prof_sample() in
+    the correct order.
 
 * 4.0.0 (August 17, 2015)
 

src/jemalloc.c

@@ -2299,7 +2299,7 @@ ixallocx_prof(tsd_t *tsd, void *ptr, size_t old_usize, size_t size,
 	tctx = prof_alloc_prep(tsd, usize_max, prof_active, false);
 	if (unlikely((uintptr_t)tctx != (uintptr_t)1U)) {
 		usize = ixallocx_prof_sample(ptr, old_usize, size, extra,
-		    alignment, zero, usize_max, tctx);
+		    alignment, usize_max, zero, tctx);
 	} else {
 		usize = ixallocx_helper(ptr, old_usize, size, extra, alignment,
 		    zero);