Fix ConnectionPatch to correctly account coordsB argument. Closes matplotlib#2377.

Author: leejjoon

lib/matplotlib/patches.py

@@ -4267,7 +4267,7 @@ def get_path_in_displaycoord(self):
         posA = self._get_xy(x, y, self.coords1, self.axesA)
 
         x, y = self.xy2
-        posB = self._get_xy(x, y, self.coords1, self.axesB)
+        posB = self._get_xy(x, y, self.coords2, self.axesB)
 
         _path = self.get_connectionstyle()(posA, posB,
                                            patchA=self.patchA,