Corrected setSampleRate_Hz() to do so

RadioIQMixer_F32.h

@@ -42,6 +42,7 @@
  *       T4.0 For an update of a 128 sample block, doSimple=1, 20 microseconds
  *
  * Rev Apr2021 Allowed for 2-channel I-Q input.  Defaults to 1 Channel. "real."
+ * Rev 30Jan23 Corrected setSampleRate_Hz(sr) to do so! RSL
  */
 
 #ifndef _radioIQMixer_f32_h
@@ -123,10 +124,11 @@ public:
     }
 
     void setSampleRate_Hz(float32_t fs_Hz) {
+		sample_rate_Hz = fs_Hz;   // Added 30Jan23 RSL
         // Check freq range
         if (freq > sample_rate_Hz/2.0f) freq = sample_rate_Hz/2.f;
         // update phase increment for new frequency
-        phaseIncrement = 512.0f * freq / fs_Hz;
+        phaseIncrement = 512.0f * freq / sample_rate_Hz;
     }
 
     void showError(uint16_t e) {    // Serial.print errors in update()