bind: replace an incorrect return with continue

Change-Id: Ie929e60614b7a42ab7f65b500725168015946f87
Reviewed-on: https://go-review.googlesource.com/24080
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>

bind/genobjc.go

@@ -714,7 +714,7 @@ func (g *objcGen) genInterfaceInterface(obj *types.TypeName, summary ifaceSummar
 	for _, m := range summary.callable {
 		if !g.isSigSupported(m.Type()) {
 			g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
-			return
+			continue
 		}
 		s := g.funcSummary(m)
 		g.Printf("- %s;\n", s.asMethod(g))

bind/testdata/ignore.objc.h.golden

@@ -57,5 +57,8 @@
 - (id)initWithRef:(id)ref;
 // skipped method I.Argument with unsupported parameter or return types
 
+// skipped method I.Result with unsupported parameter or return types
+
+@end
 
 #endif