AVR: Prevent warnings if BIN is previously defined

cmaglie · cmaglie · commit 6267c7326889 · 2017-03-08T13:34:17.000+01:00
Fix arduino#4784 Close arduino#4791
diff --git a/cores/arduino/Print.h b/cores/arduino/Print.h
@@ -29,6 +29,9 @@
 #define DEC 10
 #define HEX 16
 #define OCT 8
+#ifdef BIN // Prevent warnings if BIN is previously defined in "iotnx4.h" or similar
+#undef BIN
+#endif
 #define BIN 2
 
 class Print
