clang-tidy: disable bugprone-casting-through-void lint

This lint triggers for a void cast used to silence a cast-align warning
for write_after_free_check. We aren't violating strict aliasing because
the memory was always zeroed with memset prior to reading it as u64 and
we don't write to another way.

Author: thestinger

.clang-tidy

@@ -1,4 +1,4 @@
-Checks: 'bugprone-*,-bugprone-easily-swappable-parameters,-bugprone-macro-parentheses,-bugprone-too-small-loop-variable,cert-*,-cert-err33-c,clang-analyzer-*,-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,-clang-diagnostic-constant-logical-operand,readability-*,-readability-function-cognitive-complexity,-readability-identifier-length,-readability-implicit-bool-conversion,-readability-inconsistent-declaration-parameter-name,-readability-magic-numbers,-readability-math-missing-parentheses,-readability-named-parameter,llvm-include-order,misc-*'
+Checks: 'bugprone-*,-bugprone-casting-through-void,-bugprone-easily-swappable-parameters,-bugprone-macro-parentheses,-bugprone-too-small-loop-variable,cert-*,-cert-err33-c,clang-analyzer-*,-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,-clang-diagnostic-constant-logical-operand,readability-*,-readability-function-cognitive-complexity,-readability-identifier-length,-readability-implicit-bool-conversion,-readability-inconsistent-declaration-parameter-name,-readability-magic-numbers,-readability-math-missing-parentheses,-readability-named-parameter,llvm-include-order,misc-*'
 WarningsAsErrors: '*'
 ExcludeHeaderFilterRegex: '.*third_party/.*'