Fix -Wmaybe-uninitialized warning in JIT

Author: iluuu1994

ext/opcache/jit/zend_jit_trace.c

@@ -4296,7 +4296,7 @@ static const void *zend_jit_trace(zend_jit_trace_rec *trace_buffer, uint32_t par
 			bool op1_indirect;
 			zend_class_entry *op1_ce = NULL;
 			zend_class_entry *op2_ce = NULL;
-			bool gen_handler;
+			bool gen_handler = false;
 
 			opline = p->opline;
 			if (op1_type & (IS_TRACE_REFERENCE|IS_TRACE_INDIRECT)) {