Got rid of some more Visual Studio compiler warnings.

modules/juce_audio_processors/format_types/juce_VST3PluginFormat.cpp

@@ -1873,10 +1873,10 @@ public:
     {
         if (processor != nullptr)
         {
-            const double currentSampleRate = getSampleRate();
+            const double sampleRate = getSampleRate();
 
-            if (currentSampleRate > 0.0)
-                return jlimit (0, 0x7fffffff, (int) processor->getTailSamples()) / currentSampleRate;
+            if (sampleRate > 0.0)
+                return jlimit (0, 0x7fffffff, (int) processor->getTailSamples()) / sampleRate;
         }
 
         return 0.0;

modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp

@@ -900,13 +900,13 @@ public:
         if (effect == nullptr)
             return 0.0;
 
-        const double currentSampleRate = getSampleRate();
+        const double sampleRate = getSampleRate();
 
-        if (currentSampleRate <= 0)
+        if (sampleRate <= 0)
             return 0.0;
 
         VstIntPtr samples = dispatch (effGetTailSize, 0, 0, 0, 0);
-        return samples / currentSampleRate;
+        return samples / sampleRate;
     }
 
     bool acceptsMidi() const override    { return wantsMidiMessages; }