typo fix for error logged in import

[jmartin-tech]

print_error is not commonly used in import classes, this may not
be the best solution, however the message format needs to be addressed.

Verification

List the steps needed to make sure this thing works

• run rake spec
• Verify logged messages for failed decode

[gwillcox-r7]

Looks to be working as expected:

*cut for brevity*
Msf::DBImportError .
Msf::DBManager ........................................................................................................................................................................................................................................[-] Data format suggests response body is not encoded: invalid base64
...........................................[-] Data format suggests response body is not encoded: invalid base64
.....[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
.[-] Data format suggests response body is not encoded: invalid base64
..................................................................................................................................................................................................................................................
Metasploit::Framework::LoginScanner::Tomcat ..................................................
*cut for bevity*
Finished in 4 minutes 47.3 seconds (files took 6.18 seconds to load)
11691 examples, 0 failures, 33 pending

Randomized with seed 21755
Coverage report generated for RSpec to /home/gwillcox/git/metasploit-framework/coverage. 62941 / 110345 LOC (57.04%) covered.
 ~/git/metasploit-framework │ land-pr14538:pr/14538 !1 ?14   

[gwillcox-r7]

Release Notes

Improved Metasploit's XML importer to throw a more descriptive error message when importing data whose response body is not appropriately Base64 encoded.