fixing ifndef error

Author: SelvinPL

src/emulator.c

@@ -693,7 +693,7 @@ typedef struct {
 
 const size_t s_emulator_state_size = sizeof(EmulatorState);
 #ifdef RGBDS_LIVE
-#ifndef BREAKPOINTS_MAX_BANKS_NUMBER 1
+#ifndef BREAKPOINTS_MAX_BANKS_NUMBER
 #define BREAKPOINTS_MAX_BANKS_NUMBER 1
 #endif
 typedef uint32_t breakpoints_type;