up memory constraint (I think something happened with glibc or the kernel)

no big deal, but now we get just a bit more memory allocated (4152 over
instead of the 4100 we were previously looking for)

testsuite/expect/test12.2

@@ -116,7 +116,7 @@ proc _get_mem {prog} {
 	# Compute error in KB
 	set diff_mem [expr $mem_used - $mem_size]
 	set error_mem [expr abs($diff_mem)]
-	if {$error_mem > 4100} {
+	if {$error_mem > 4200} {
 		send_user "\nFAILURE: sstat memory use discrepancy of $error_mem KB\n"
 		send_user "  Wanted $mem_size KB, got $mem_used KB\n"
 		return 1
@@ -189,7 +189,7 @@ expect {
 	-re "Requested node configuration is not available" {
 		set config_prob 1
 		exp_continue
-	}		
+	}
 	-re "Submitted batch job ($number)" {
 		set job_id $expect_out(1,string)
 		exp_continue