fixed warning in pooling

aidge_export_cpp/kernels/pooling.hpp

@@ -7,7 +7,7 @@
 #include <stdexcept>
 
 
-template<int NB_CHANNELS, 
+template<int NB_CHANNELS,
          int CHANNELS_HEIGHT, int CHANNELS_WIDTH,
          int NB_OUTPUTS,
          int OUTPUTS_HEIGHT, int OUTPUTS_WIDTH,
@@ -17,7 +17,7 @@ template<int NB_CHANNELS,
          Pooling_T POOLING_TYPE,
          ActivationFunction_T ACTIVATION,
          typename Input_T, typename Output_T>
-__attribute__((always_inline)) inline 
+__attribute__((always_inline)) inline
 void pooling_forward(
     const Input_T* __restrict inputs,
     Output_T* __restrict outputs)
@@ -32,7 +32,7 @@ void pooling_forward(
             : max(PADDING_Y - (oy * STRIDE_Y), 0);
         const int syMax = (PADDING_Y == 0
                 && OUTPUTS_HEIGHT == OUTPUTS_HEIGHT_NOPAD) ? POOL_HEIGHT
-            : clamp(CHANNELS_HEIGHT + PADDING_Y - (oy * STRIDE_Y), 
+            : clamp(CHANNELS_HEIGHT + PADDING_Y - (oy * STRIDE_Y),
                     0, POOL_HEIGHT);
         const int iy = (oy * STRIDE_Y) - PADDING_Y;
 
@@ -45,7 +45,7 @@ void pooling_forward(
                 const int sxMax = (PADDING_X == 0
                         && OUTPUTS_WIDTH == OUTPUTS_WIDTH_NOPAD)
                             ? POOL_WIDTH
-                    : clamp(CHANNELS_WIDTH + PADDING_X - (ox * STRIDE_X), 
+                    : clamp(CHANNELS_WIDTH + PADDING_X - (ox * STRIDE_X),
                             0, POOL_WIDTH);
                 const int ix = (ox * STRIDE_X) - PADDING_X;
 
@@ -86,7 +86,7 @@ void pooling_forward(
                     outputs[oOffset + output] = maxVal;
                 }
                 else if (POOLING_TYPE == Average) {
-                    int32_t sum = 0;
+                    outputs[oOffset + output] = 0;
 
                     for (int sy = 0; sy < POOL_HEIGHT; ++sy) {
                         if ((PADDING_Y != 0