erts: Fix memory corruption when reading topology info

If the number of processors actually found while reading sysfs
is lower than the configured value, we realloc() the cpuinfo array
to the smaller size, but we then iterate it using the original
configured size, thus corrupting memory beyond the allocated
block.

erts/lib_src/common/erl_misc_utils.c

@@ -727,7 +727,7 @@ adjust_processor_nodes(erts_cpu_info_t *cpuinfo, int no_nodes)
 
 	prev = NULL;
 	this = &cpuinfo->topology[0];
-	last = &cpuinfo->topology[cpuinfo->configured-1];
+	last = &cpuinfo->topology[cpuinfo->topology_size-1];
 	while (1) {
 	    if (processor == this->processor) {
 		if (node != this->node)
@@ -939,7 +939,7 @@ read_topology(erts_cpu_info_t *cpuinfo)
 
 	if (res > 1) {
 	    prev = this++;
-	    last = &cpuinfo->topology[cpuinfo->configured-1];
+	    last = &cpuinfo->topology[cpuinfo->topology_size-1];
 
 	    while (1) {
 		this->thread = ((this->node == prev->node
@@ -1094,7 +1094,7 @@ read_topology(erts_cpu_info_t *cpuinfo)
 
 	if (res > 1) {
 	    prev = this++;
-	    last = &cpuinfo->topology[cpuinfo->configured-1];
+	    last = &cpuinfo->topology[cpuinfo->topology_size-1];
 
 	    while (1) {
 		this->thread = ((this->node == prev->node