Add noexcept qualifications in src/common

Apparently this can actually make a difference in some cases, and the
C++ Core Guideliens recommend doing this on all default constructors,
destructors, and all functions that can not throw (and thus also don't
allocate).

src/common/logging/vst2.cpp

@@ -525,7 +525,8 @@ void Vst2Logger::log_event_response(
     }
 }
 
-bool Vst2Logger::should_filter_event(bool is_dispatch, int opcode) const {
+bool Vst2Logger::should_filter_event(bool is_dispatch,
+                                     int opcode) const noexcept {
     if (logger.verbosity >= Logger::Verbosity::all_events) {
         return false;
     }

src/common/logging/vst2.h

@@ -87,5 +87,5 @@ class Vst2Logger {
      * Determine whether an event should be filtered based on the current
      * verbosity level.
      */
-    bool should_filter_event(bool is_dispatch, int opcode) const;
+    bool should_filter_event(bool is_dispatch, int opcode) const noexcept;
 };