Don't update head animation if the animation is paused (#7980)

CHANGELOG.md

@@ -172,6 +172,7 @@
     Bug #7901: Editor: Teleport-related fields shouldn't be editable if a ref does not teleport
     Bug #7908: Key bindings names in the settings menu are layout-specific
     Bug #7943: Using "addSoulGem" and "dropSoulGem" commands to creatures works only with "Weapon & Shield" flagged ones
+    Bug #7980: Paralyzed NPCs' lips move
     Feature #2566: Handle NAM9 records for manual cell references
     Feature #3537: Shader-based water ripples
     Feature #5173: Support for NiFogProperty

apps/openmw/mwrender/npcanimation.cpp

@@ -155,6 +155,9 @@ namespace MWRender
         if (!mEnabled)
             return;
 
+        if (dt == 0.f)
+            return;
+
         if (!MWBase::Environment::get().getSoundManager()->sayActive(mReference))
         {
             mBlinkTimer += dt;