Only need keysPerLayer in the updating branch of the conditional

src/Kaleidoscope/EEPROM-Keymap.cpp

@@ -116,7 +116,6 @@ bool EEPROMKeymap::focusKeymapLayer(const char *command) {
   if (layer >= max_layers_) {
     return false;
   }
-  uint16_t keysPerLayer = ROWS * COLS;
   if (Serial.peek() == '\n') {
     for (uint8_t row = 0; row < ROWS; row++) {
       for (uint8_t col = 0; col < COLS; col++) {
@@ -126,6 +125,7 @@ bool EEPROMKeymap::focusKeymapLayer(const char *command) {
       }
     }
   } else {
+    uint16_t keysPerLayer = ROWS * COLS;
     uint16_t offset = layer * keysPerLayer;
     for (uint16_t k = 0; (k < keysPerLayer) && (Serial.peek() != '\n'); k++) {
       updateKey(offset + k, parseKey());