Fix cg_gcc merge

Author: GuillaumeGomez

compiler/rustc_codegen_gcc/src/asm.rs

@@ -502,12 +502,7 @@ impl<'a, 'gcc, 'tcx> AsmBuilderMethods<'tcx> for Builder<'a, 'gcc, 'tcx> {
         // 4. Generate Extended Asm block
 
         let block = self.llbb();
-        let extended_asm = if let Some(dest) = dest {
-            assert!(!labels.is_empty());
-            block.end_with_extended_asm_goto(None, &template_str, &labels, Some(dest))
-        } else {
-            block.add_extended_asm(None, &template_str)
-        };
+        let extended_asm = block.add_extended_asm(None, &template_str);
 
         for op in &outputs {
             extended_asm.add_output_operand(None, &op.to_constraint(), op.tmp_var);