shithub: hugo

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Print error if index value in a page is wrong type

This was causing a panic with no information displayed about the
page causing the error.

--- a/hugolib/site.go

+++ b/hugolib/site.go

@@ -362,8 +362,13 @@

 			vals := p.GetParam(plural)

 			if vals != nil {

-				for _, idx := range vals.([]string) {

-					s.Indexes[plural].Add(idx, s.Pages[i])

+				v, ok := vals.([]string)

+				if ok {

+					for _, idx := range v {

+						s.Indexes[plural].Add(idx, s.Pages[i])

+					}

+				} else {

+					PrintErr("Invalid " + plural + " in " + p.File.FileName)

 				}

 			}

 		}