Merge pull request sql-js#76 from firien/bindnull-fix

Fix a bug in `api.coffee` that makes sql.js throw an error when binding a null value to a statement.

coffee/api.coffee

@@ -186,7 +186,7 @@ class Statement
 			when "number","boolean" then @bindNumber val+0, pos
 			when "object"
 				if val is null then @bindNull pos
-				if val.length? then @bindBlob val, pos
+				else if val.length? then @bindBlob val, pos
 				else throw "Wrong API use : tried to bind a value of an unknown type (#{val})."
 	### Bind names and values of an object to the named parameters of the statement
 	@param [Object]