Fixing Echo#Reverse for Any type routes

[pafuent]

Fixes #1690

[codecov]

Codecov Report

Merging #1695 (5f1aa1b) into master (17a5fca) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #1695   +/-   ##
=======================================
  Coverage   84.72%   84.72%           
=======================================
  Files          29       29           
  Lines        1938     1938           
=======================================
  Hits         1642     1642           
  Misses        188      188           
  Partials      108      108           

Impacted Files	Coverage Δ
echo.go	84.75% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 17a5fca...5f1aa1b. Read the comment docs.

[lammel]

@pafuent Lovely thanks.
I hope noone relies on that undocumented behaviour.