Merge pull request #1019 from PaggyCyntec/patch-3

Update main.cpp

Author: 0xc0170

libraries/tests/mbed/stdio/main.cpp

@@ -15,9 +15,8 @@ int main() {
     DigitalOut led1(LED1);
     DigitalOut led2(LED2);
 
-    union {
-        int value_int;
-    };
+    int value_int;
+    
 
     notify_start(); // Just to sync with host test supervisor