Rename the suffix of a pcap test file to .pcap

(cherry picked from commit bb704ed)

Author: fxlb

tests/smb.tests

@@ -122,15 +122,15 @@ $testlist = [
     {
         config_set   => 'ENABLE_SMB',
         name => 'smb_data_print-segv',
-        input => 'smb_data_print-segv.pcapng',
+        input => 'smb_data_print-segv.pcap',
         output => 'smb_data_print-segv.out',
         args   => '-vv',
     },
 
     {
         config_unset   => 'ENABLE_SMB',
         name => 'smb_data_print-segv-nosmb',
-        input => 'smb_data_print-segv.pcapng',
+        input => 'smb_data_print-segv.pcap',
         output => 'smb_data_print-segv-nosmb.out',
         args   => '-vv',
     },