Pascal: Consistently use spaces before opening parentheses

[eht16]

Follow-up to #3205.
Sorry for the inconsistencies in code styling I introduced.

[codecov]

Codecov Report

Merging #3213 (bcf407d) into master (7e06c76) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #3213   +/-   ##
=======================================
  Coverage   84.94%   84.94%           
=======================================
  Files         206      206           
  Lines       49030    49030           
=======================================
  Hits        41650    41650           
  Misses       7380     7380           

Impacted Files	Coverage Δ
parsers/pascal.c	90.24% <100.00%> (ø)

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[masatake]

Thank you.
I will/must merge this before other pull requests for Pascal.

[masatake]

Thank you.