Aaron Franke 58c87e5d26 Fix many errors found by PVS-Studio
Fix errors 2, 3, 4, 6, 8, 9, 11, 12, 13, 14, and 15.

(cherry picked from commit cb01268562a47e6a1c32559f58fbadd46e52d304)
2019-07-03 15:39:12 +02:00
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