lscpu: don't pass null pointer to string functions [coverity scan]

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/sys-utils/lscpu-dmi.c b/sys-utils/lscpu-dmi.c
index 8f02779d6e7f2cad0ccba2e54d3d0a0b3f531083..852817df1632382d74e0df2159e09821ac4dded1 100644 (file)
--- a/sys-utils/lscpu-dmi.c
+++ b/sys-utils/lscpu-dmi.c
@@ -155,11 +155,12 @@ static int hypervisor_from_dmi_table(uint32_t base, uint16_t len,
                data = next;
                i++;
        }
-       if (!strcmp(manufacturer, "innotek GmbH"))
+       if (manufacturer && !strcmp(manufacturer, "innotek GmbH"))
                return HYPER_INNOTEK;
-       else if (strstr(manufacturer, "HITACHI") && strstr(product, "LPAR"))
+       else if (manufacturer && strstr(manufacturer, "HITACHI") &&
+                                       product && strstr(product, "LPAR"))
                return HYPER_HITACHI;
-       else if (!strcmp(vendor, "Parallels"))
+       else if (!vendor && strcmp(vendor, "Parallels"))
                return HYPER_PARALLELS;
 
        free(buf);