fix HW_NUMA_NODES glob issue

Author: kcgthb

scripts/lbnl_hw.nhc

@@ -30,7 +30,7 @@ EDAC_MAX_UNCORRECTED="${EDAC_MAX_UNCORRECTED:-0}"
 
 # Read hardware information from /proc and /sys files.
 function nhc_hw_gather_data() {
-    local IFS LINE CORES SIBLINGS MHZ PROCESSOR PHYS_ID PORT INDEX DEV NODES
+    local IFS LINE CORES SIBLINGS MHZ PROCESSOR PHYS_ID PORT INDEX DEV
     local -a FIELD PHYS_IDS IB_PORTS
 
     # Gather CPU info
@@ -74,8 +74,7 @@ function nhc_hw_gather_data() {
 
     # Gather NUMA info
     if [[ -d /sys/devices/system/node ]]; then
-        NODES=(/sys/devices/system/node/node*)
-        HW_NUMA_NODES=${#NODES[@]}
+        HW_NUMA_NODES=$(shopt -s nullglob; set -- /sys/devices/system/node/node* ; echo $#)
         HW_NUMA_NPS=$((HW_NUMA_NODES/$HW_SOCKETS))
     fi
     dbg "Got $HW_NUMA_NODES NUMA node(s) (NPS: $HW_NUMA_NPS)"