derive(PartialEq): Fix raw strings in test

gcc/testsuite/ChangeLog:

	* rust/execute/torture/derive-partialeq2.rs: Add missing terminating nul char.

Co-authored-by: Pierre-Emmanuel Patry <[email protected]>

Author: CohenArthur

gcc/testsuite/rust/execute/torture/derive-partialeq2.rs

@@ -41,9 +41,9 @@ extern "C" {
 
 fn print(b: bool) {
     if b {
-        unsafe { puts("true" as *const str as *const i8) }
+        unsafe { puts("true\0" as *const str as *const i8) }
     } else {
-        unsafe { puts("false" as *const str as *const i8) }
+        unsafe { puts("false\0" as *const str as *const i8) }
     }
 }