FIx ARRAYSIZE def and Murphpad string array (#18392)

Co-authored-by: Jonavin <=>

keyboards/mechwild/murphpad/keymaps/jonavin/keymap.c

@@ -175,7 +175,7 @@ static const keycodedescType PROGMEM keyselection[] = {
         {"Break",   KC_PAUS},
         {"C-A-D",   KC_CAD},  // Ctrl-Alt-Del
         {"AltF4",   KC_AF4},
-        {"QK_BOOT",   QK_BOOT},   // firmware flash mode
+        {"RESET",   QK_BOOT},   // firmware flash mode
 };
 
 #define MAX_KEYSELECTION sizeof(keyselection)/sizeof(keyselection[0])

users/jonavin/jonavin.h

@@ -18,7 +18,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
 
 // DEFINE MACROS
+#ifndef ARRAYSIZE
 #define ARRAYSIZE(arr)  sizeof(arr)/sizeof(arr[0])
+#endif // !ARRAYSIZE
 
 
 // LAYERS