Fix bad console output when using console_output_style=classic

[nicoddemus]

Fix #3883

[coveralls]

Coverage increased (+0.04%) to 92.631% when pulling 6991a16 on nicoddemus:bad-output-classic into a319674 on pytest-dev:master.

[codecov]

Codecov Report

Merging #3885 into master will increase coverage by 0.04%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3885      +/-   ##
==========================================
+ Coverage   92.59%   92.63%   +0.04%     
==========================================
  Files          51       51              
  Lines        9960     9960              
==========================================
+ Hits         9222     9226       +4     
+ Misses        738      734       -4

Impacted Files	Coverage Δ
src/_pytest/terminal.py	94.23% <100%> (+0.74%)	⬆️

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