Fix debug build

Change-Id: I48a87967ac741455502ac1a18465ae6ed7ef0d12
diff --git a/native/jni/src/proximity_info.cpp b/native/jni/src/proximity_info.cpp
index d1aa664..2ba244a 100644
--- a/native/jni/src/proximity_info.cpp
+++ b/native/jni/src/proximity_info.cpp
@@ -53,10 +53,10 @@
                   && keyWidths && keyHeights && keyCharCodes && sweetSpotCenterXs
                   && sweetSpotCenterYs && sweetSpotRadii),
           mLocaleStr(localeStr) {
+    const int proximityGridLength = GRID_WIDTH * GRID_HEIGHT * MAX_PROXIMITY_CHARS_SIZE;
     if (DEBUG_PROXIMITY_INFO) {
         AKLOGI("Create proximity info array %d", proximityGridLength);
     }
-    const int proximityGridLength = GRID_WIDTH * GRID_HEIGHT * MAX_PROXIMITY_CHARS_SIZE;
     mProximityCharsArray = new int32_t[proximityGridLength];
     memcpy(mProximityCharsArray, proximityCharsArray,
             proximityGridLength * sizeof(mProximityCharsArray[0]));