glsl: Remove redundant writes to prog->LinkStatus

The linker_error() function sets prog->LinkStatus to false.  There's
no reason for the caller of linker_error() to also do so.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/glsl/ir_function_detect_recursion.cpp

@@ -319,7 +319,6 @@ emit_errors_linked(const void *key, void *data, void *closure)
 
    linker_error(prog, "function `%s' has static recursion.\n", proto);
    ralloc_free(proto);
-   prog->LinkStatus = false;
 }