vendor: upgrade go-mysql-server

Signed-off-by: Miguel Molina <[email protected]>

Author: erizocosmico

go.mod

@@ -19,7 +19,7 @@ require (
 	github.com/src-d/go-borges v0.0.0-20190628121335-da12a84d60fd
 	github.com/src-d/go-git v4.7.0+incompatible
 	github.com/src-d/go-git-fixtures v3.5.1-0.20190605154830-57f3972b0248+incompatible
-	github.com/src-d/go-mysql-server v0.4.1-0.20190708083625-b61703ad45cc
+	github.com/src-d/go-mysql-server v0.4.1-0.20190730105128-550cc54baee2
 	github.com/stretchr/testify v1.3.0
 	github.com/uber-go/atomic v1.4.0 // indirect
 	github.com/uber/jaeger-client-go v2.16.0+incompatible

go.sum

@@ -238,8 +238,8 @@ github.com/src-d/go-git v4.7.0+incompatible h1:IYSSnbAHeKmsfbQFi9ozbid+KNh0bKjlo
 github.com/src-d/go-git v4.7.0+incompatible/go.mod h1:1bQciz+hn0jzPQNsYj0hDFZHLJBdV7gXE2mWhC7EkFk=
 github.com/src-d/go-git-fixtures v3.5.1-0.20190605154830-57f3972b0248+incompatible h1:A5bKevhs9C//Nh8QV0J+1KphEaIa25cDe1DTs/yPxDI=
 github.com/src-d/go-git-fixtures v3.5.1-0.20190605154830-57f3972b0248+incompatible/go.mod h1:XcIQp7L+k0pgfTqfbaTKj3kxlBv8kYOKZ/tKNXbZFLg=
-github.com/src-d/go-mysql-server v0.4.1-0.20190708083625-b61703ad45cc h1:Rgz2etoEnslCgMKCfwpKd0hBFrZVxpV33QAXjadVi0o=
-github.com/src-d/go-mysql-server v0.4.1-0.20190708083625-b61703ad45cc/go.mod h1:GO8SmBnN9LcKSXy6DYuBbqKtJvrRnHsBrlXvlVOX+NM=
+github.com/src-d/go-mysql-server v0.4.1-0.20190730105128-550cc54baee2 h1:Z9Z1FKGzlV+DEdgEwPU0Lqjj8Rj2NaQ6HJbkJ+eOz6U=
+github.com/src-d/go-mysql-server v0.4.1-0.20190730105128-550cc54baee2/go.mod h1:GO8SmBnN9LcKSXy6DYuBbqKtJvrRnHsBrlXvlVOX+NM=
 github.com/src-d/go-oniguruma v1.0.0/go.mod h1:chVbff8kcVtmrhxtZ3yBVLLquXbzCS6DrxQaAK/CeqM=
 github.com/src-d/go-oniguruma v1.1.0 h1:EG+Nm5n2JqWUaCjtM0NtutPxU7ZN5Tp50GWrrV8bTww=
 github.com/src-d/go-oniguruma v1.1.0/go.mod h1:chVbff8kcVtmrhxtZ3yBVLLquXbzCS6DrxQaAK/CeqM=