Missing link for "when" in The Ruby C API

Hello,

I noticed that there is no URL for the [when] reference on "The Ruby C API".
I looked in the Git history, and it seems that the link was missing from the beginning. Here is the first commit that adds this footnote:

emberb/_posts/2010-01-01-c.markdown

Lines 294 to 297 in 7b05175

    
           [^5]: The documentation [states](../reamde#control-structure) that "You have to 
        
           	 clear the error info [when] ignoring the caught exception". But I'm not 
        
           	 aware of any case where it would be cleared for you &ndash; it seems like 
        
           	 you _always_ have to clear it.

Thank you.

It's not a broken link, it was a bad way to indicate that I removed some words from the original quote. Replaced with ellipsis in 2f0f95b

	[^5]: The documentation [states](../reamde#control-structure) that "You have to
	clear the error info [when] ignoring the caught exception". But I'm not
	aware of any case where it would be cleared for you – it seems like
	you _always_ have to clear it.