Fix inconsistencies in variable names for struct methods (#13561)

go.mod

@@ -39,7 +39,7 @@ require (
 	github.com/icrowley/fake v0.0.0-20180203215853-4178557ae428
 	github.com/jaytaylor/html2text v0.0.0-20190408195923-01ec452cbe43
 	github.com/jmoiron/sqlx v1.2.0
-	github.com/jonboulle/clockwork v0.1.0 // indirect
+	github.com/jonboulle/clockwork v0.1.0
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
 	github.com/lib/pq v1.2.0
 	github.com/magiconair/properties v1.8.1 // indirect
@@ -68,7 +68,7 @@ require (
 	github.com/prometheus/common v0.7.0 // indirect
 	github.com/prometheus/procfs v0.0.5 // indirect
 	github.com/rs/cors v1.7.0
-	github.com/russellhaering/goxmldsig v0.0.0-20180430223755-7acd5e4a6ef7 // indirect
+	github.com/russellhaering/goxmldsig v0.0.0-20180430223755-7acd5e4a6ef7
 	github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd
 	github.com/segmentio/analytics-go v3.1.0+incompatible
 	github.com/segmentio/backo-go v0.0.0-20160424052352-204274ad699c // indirect