Add -Wsuggest-destructor-override to enabled warnings

src/catch2/internal/catch_context.hpp

@@ -23,7 +23,7 @@ namespace Catch {
 
     class IMutableContext : public IContext {
     public:
-        virtual ~IMutableContext(); // = default
+        ~IMutableContext() override; // = default
         virtual void setResultCapture( IResultCapture* resultCapture ) = 0;
         virtual void setConfig( IConfig const* config ) = 0;
 

src/catch2/internal/catch_istream.cpp

@@ -33,7 +33,7 @@ namespace Detail {
                 setp( data, data + sizeof(data) );
             }
 
-            ~StreamBufImpl() noexcept {
+            ~StreamBufImpl() noexcept override {
                 StreamBufImpl::sync();
             }
 

src/catch2/internal/catch_run_context.cpp

@@ -32,7 +32,7 @@ namespace Catch {
             GeneratorTracker( TestCaseTracking::NameAndLocation const& nameAndLocation, TrackerContext& ctx, ITracker* parent )
             :   TrackerBase( nameAndLocation, ctx, parent )
             {}
-            ~GeneratorTracker();
+            ~GeneratorTracker() override;
 
             static GeneratorTracker& acquire( TrackerContext& ctx, TestCaseTracking::NameAndLocation const& nameAndLocation ) {
                 GeneratorTracker* tracker;

src/catch2/matchers/catch_matchers_templated.hpp

@@ -22,7 +22,7 @@ namespace Matchers {
     class MatcherGenericBase : public MatcherUntypedBase {
     public:
         MatcherGenericBase() = default;
-        virtual ~MatcherGenericBase(); // = default;
+        ~MatcherGenericBase() override; // = default;
 
         MatcherGenericBase(MatcherGenericBase&) = default;
         MatcherGenericBase(MatcherGenericBase&&) = default;