Leading comma in variable declaration block silently breaks lexer

[LJ1102]

Found a nice little edgecase here, notice the declaration list in the test function beginning with a leading comma, this was actually just a typo from moving a bunch of declarations around and optimizing them, however it seems to be valid (neither intel nor nvidia driver complained; shader works as intended), the minifier while not complaining breaks the code by not renaming the variables but dropping the type, older versions left the declaration intact but still didn't optimize the names.

#version 430
float test(){
	float
            ,hello=22
            ,there=32
        ;
	hello += hello*(hello-5)*there;
	return hello;
}
out vec4 OUT;
void main(){
	OUT=vec4(test());
}