fix(ppdb): Parse streams in the correct order

[loewenheim]

Ppdb parsing incorrectly assumed that the #Pdb stream would always be physically located before the #~ stream and just parsed them in order. Since the #Pdb stream contains table size information that must be known during #~ parsing, this led to the bug described in #759.

The fix is simply to initially collect the locations of all the streams and then parse the #Pdb stream before the others.

[codecov]

Codecov Report

Merging #760 (d9de028) into master (a14f0e2) will increase coverage by 0.01%.
The diff coverage is 90.90%.

❗ Current head d9de028 differs from pull request most recent head e8f8d6c. Consider uploading reports for the commit e8f8d6c to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #760      +/-   ##
==========================================
+ Coverage   73.89%   73.90%   +0.01%     
==========================================
  Files          69       69              
  Lines       14949    14952       +3     
==========================================
+ Hits        11047    11051       +4     
+ Misses       3902     3901       -1