Repair MarlinSerial with TX-buffer #4688
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These '{' are important to avoid the redefinition of `unsigned char _sreg = SREG;`
at the same level.
Used in
```
#define CRITICAL_SECTION_START unsigned char _sreg = SREG; cli();
```
|
I tried to come up with some clever way that the braces wouldn't be needed, but I got nothin'. |
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These '{'/'}' are important to avoid the redefinition of
unsigned char _sreg = SREG;at the same level.
Used in