API: prefer to use NULLSTR macro

e531f9a9 · Osier Yang · 2b0803c6 · e531f9a9
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src/libvirt.c src/libvirt.c +1 -1

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--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -10300,7 +10300,7 @@ virConnectFindStoragePoolSources(virConnectPtr conn,
                                 unsigned int flags)
 {
    VIR_DEBUG("conn=%p, type=%s, src=%s, flags=%x",
-              conn, type ? type : "", srcSpec ? srcSpec : "", flags);
+              conn, NULLSTR(type), NULLSTR(srcSpec), flags);
    virResetLastError();