Don't allow 0 for window height, fixes #84

Author: joonty

plugin/python/vdebug/ui/vimui.py

@@ -270,9 +270,11 @@ def getwinnr(self):
         return int(vim.eval("bufwinnr('"+self.name+"')"))
 
     def set_height(self,height):
-        minheight  =  vim.eval("&winminheight")
+        minheight = vim.eval("&winminheight")
         if height < minheight:
-            height  =  minheight
+            height = minheight
+        if height < 0:
+            height = 1
         self.command('set winheight=%s' % str(height))
 
     def write(self, msg, return_focus = True, after = "normal G"):