Initialize more class fields to resolve compilation issues on some co…

…mpilers (#5412)

This PR aims to fix Release compilation issues here:
https://github.com/TileDB-Inc/TileDB/actions/runs/12376484635/job/34543717418#step:9:238


---
TYPE: BUG
DESC: Initialize more class fields to resolve compilation issues on some compilers

---------

Co-authored-by: Dušan Baran <me.dusanbaran@gmail.com>

test/src/unit-capi-serialized_queries.cc

@@ -58,7 +58,7 @@ using ResultSetType = std::map<std::string, std::any>;
 namespace {
 
 template <class T>
-bool check_result(const T a, const T b, size_t start, size_t end) {
+bool check_result(const T& a, const T& b, size_t start, size_t end) {
   auto a_exp = T(a.begin() + start, a.begin() + end);
   auto b_exp = T(b.begin() + start, b.begin() + end);
   return a_exp == b_exp;

tiledb/sm/filter/filter_buffer.h

@@ -339,7 +339,7 @@ class FilterBuffer {
     shared_ptr<Buffer> underlying_buffer_;
 
     /** True if this instance is a view on the underlying buffer. */
-    bool is_view_;
+    bool is_view_{false};
 
     /**
      * If this instance is a view, the view Buffer (which does not own its

tiledb/sm/filter/filter_pipeline.h

@@ -323,7 +323,7 @@ class FilterPipeline {
   std::vector<shared_ptr<Filter>> filters_;
 
   /** The max chunk size allowed within tiles. */
-  uint32_t max_chunk_size_;
+  uint32_t max_chunk_size_{0};
 
   /**
    * Get the chunk offsets for a var sized tile so that integral cells are