Fix some (benign) shadowing warnings

src/finer/Guide.h

@@ -465,9 +465,9 @@ protected:
     int roundUp(int value) const {
         if (value < 1) return 1;
         if (!(value & (value - 1))) return value;
-        int bits = 0;
+        size_t bits = 0;
         while (value) { ++bits; value >>= 1; }
-        value = 1 << bits;
+        value = size_t(1) << bits;
         return value;
     }
 

src/finer/PhaseAdvance.h

@@ -100,13 +100,13 @@ public:
         Profiler profiler("GuidedPhaseAdvance::advance");
         
         int myFftBand = 0;
-        int i = 0;
+        int bandi = 0;
         for (const auto &fband : guidance[0]->fftBands) {
             if (fband.fftSize == m_parameters.fftSize) {
-                myFftBand = i;
+                myFftBand = bandi;
                 break;
             }
-            ++i;
+            ++bandi;
         }
 
         int bs = m_parameters.fftSize / 2 + 1;