minor fix

wled00/FXparticleSystem.cpp

@@ -2127,8 +2127,8 @@ void* particleMemoryManager(const uint32_t requestedParticles, size_t structSize
     PSPRINTLN("PS transition ended, final particle handover");
     uint32_t maxParticles = pmem->buffersize / structSize; // maximum number of particles that fit in the buffer
     if (maxParticles > availableToPS) { // not all particles transferred yet
-      int32_t totransfer = maxParticles - availableToPS; // transfer all remaining particles
-      if(totransfer > 0) // safety check
+      uint32_t totransfer = maxParticles - availableToPS; // transfer all remaining particles
+      if(totransfer <= maxParticles) // safety check
         particleHandover(buffer, structSize, totransfer);
       if(maxParticles > numParticlesUsed) { // FX uses less than max: move the already existing particles to the beginning of the buffer
         uint32_t usedbytes = availableToPS * structSize;
@@ -2184,7 +2184,7 @@ void particleHandover(void *buffer, size_t structSize, int32_t numToTransfer) {
   }
   uint16_t maxTTL = 0;
   uint32_t TTLrandom = 0;
-   maxTTL = ((unsigned)strip.getTransition() << 1) / FRAMETIME_FIXED; // tie TTL to transition time: limit to double the transition time + some randomness
+  maxTTL = ((unsigned)strip.getTransition() << 1) / FRAMETIME_FIXED; // tie TTL to transition time: limit to double the transition time + some randomness
   #ifndef WLED_DISABLE_PARTICLESYSTEM2D
   if (structSize == sizeof(PSparticle)) { // 2D particle
     PSparticle *particles = (PSparticle *)buffer;