getAdapterName: check for SCSI_HOST

Rather than assume that NOT FC_HOST is SCSI_HOST, let's call them out
specifically. Makes it easier to find SCSI_HOST code/structs and ensures
something isn't missed in the future

src/storage/storage_backend_scsi.c

@@ -547,11 +547,9 @@ getAdapterName(virStoragePoolSourceAdapter adapter)
 {
     char *name = NULL;
 
-    if (adapter.type != VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
+    if (adapter.type == VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST) {
         ignore_value(VIR_STRDUP(name, adapter.data.name));
-        return name;
-    }
-
+    } else if (adapter.type == VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
         if (!(name = virGetFCHostNameByWWN(NULL,
                                            adapter.data.fchost.wwnn,
                                            adapter.data.fchost.wwpn))) {
@@ -560,6 +558,7 @@ getAdapterName(virStoragePoolSourceAdapter adapter)
                              "wwpn='%s'"), adapter.data.fchost.wwnn,
                            adapter.data.fchost.wwpn);
         }
+    }
 
     return name;
 }