Early return if there are no selections

Saw an IndexError happen while testing in ST3

Author: frou

src/blame_inline.py

@@ -115,6 +115,9 @@ def show_inline_blame(self):
 
         phantoms = []
         sels = self.view.sel()
+        if len(sels) < 1:
+            return
+
         # @todo Support showing inline blame for multiple carets?
         # @body Maybe with a sanity check that there aren't too many (more than 10?)
         line = self.view.line(sels[0])