[perl #116981] 'our sub' segfaults perl if the sub did not compile

Minor update to the previous patch, it should obviously free the sv
before setting the pointer to it to null.

• [perl #116981] 'our sub' segfaults perl if the sub did not compile by Peter Martini via RT
• Re: [perl #116981] 'our sub' segfaults perl if the sub did notcompile by Dave Mitchell
• [perl #116981] 'our sub' segfaults perl if the sub did not compile by Peter Martini via RT
• [perl #116981] 'our sub' segfaults perl if the sub did not compile by Peter Martini via RT
• Re: [perl #116981] 'our sub' segfaults perl if the sub did notcompile by Jesse Luehrs
• Re: [perl #116981] 'our sub' segfaults perl if the sub did not compile by Peter Martini
• [perl #116981] 'our sub' segfaults perl if the sub did not compile by Peter Martini