enhance previous commit logic

spectre-meltdown-checker.sh

@@ -3857,14 +3857,17 @@ check_CVE_2018_3646_linux()
 			# Here, we want to know if we are hosting a hypervisor, and running some VMs on it.
 			# If we find no evidence that this is the case, assume we're not (to avoid scaring users),
 			# this can always be overridden with --vmm in any case.
-			# ... ignore SC2009 as `ps ax` is actually used as a fallback if `pgrep` isn't installed
-			# shellcheck disable=SC2009
-			if command -v pgrep >/dev/null 2>&1 && { pgrep qemu >/dev/null || pgrep kvm >/dev/null || pgrep libvirtd >/dev/null; }; then
-				has_vmm=1
-			elif ps ax | grep -vw grep | grep -q -e '\<qemu' -e '/qemu' -e '<\kvm' -e '/kvm' -e '/libvirtd'; then
-				has_vmm=1
-			else
 			has_vmm=0
+			if command -v pgrep >/dev/null 2>&1; then
+				if pgrep qemu >/dev/null || pgrep kvm >/dev/null || pgrep libvirtd >/dev/null; then
+					has_vmm=1
+				fi
+			else
+				# ignore SC2009 as `ps ax` is actually used as a fallback if `pgrep` isn't installed
+				# shellcheck disable=SC2009
+				if ps ax | grep -vw grep | grep -q -e '\<qemu' -e '/qemu' -e '<\kvm' -e '/kvm' -e '/libvirtd'; then
+					has_vmm=1
+				fi
 			fi
 		fi
 		if [ "$has_vmm" = 0 ]; then