Remove cache_time_info and always cache time info

It sort of goes against yabridge's principles to not do these
unnecessary `audioMasterGetTime()` calls if the plugin does that, but it
also hurts the user experience to not have this as a default.

src/wine-host/bridges/vst2.h

@@ -77,12 +77,20 @@ class Vst2Bridge : public HostBridge {
     intptr_t host_callback(AEffect*, int, int, intptr_t, void*, float);
 
     /**
-     * With the `audioMasterGetTime` host callback the plugin expects the return
-     * value from the calblack to be a pointer to a VstTimeInfo struct. If the
-     * host did not support a certain time info query, than we'll store the
-     * returned null pointer as a nullopt.
+     * The time information returned by the host after the plugin calls
+     * `audioMasterGetTime()`. We'll have to return a pointer to this, so we'll
+     * store it here. If the host returned a null pointer, then we'll just store
+     * a nullopt.
+     *
+     * We'll keep this information around for the entire processing cycle, in
+     * case a plugin somehow calls this function more than once, like the SWAM
+     * Cello plugin does.
+     *
+     * XXX: We don't have any logging for when the plugin calls
+     *      `audioMasterGetTime()` more than once, but printing some message
+     *      44100 times per second also doesn't sound great
      */
-    std::optional<VstTimeInfo> time_info;
+    std::optional<VstTimeInfo> cached_time_info;
 
    private:
     /**