Fix some spurious results in ExternalFlowInheritance tests

Several struct types were being considered as the same. The fix is to
give them unique fields.

Author: owen-mc

go/ql/test/library-tests/semmle/go/dataflow/ExternalFlowInheritance/test_fields.go

@@ -6,12 +6,12 @@ import (
 
 func TestFieldsP1(t test.P1) {
 	a := t.SourceField
-	t.SinkField = a // $ P1[f] P1[t] ql_P1 SPURIOUS: ql_S1
+	t.SinkField = a // $ P1[f] P1[t] ql_P1
 }
 
 func TestFieldsS1(t test.S1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[f] S1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[f] S1[t] ql_S1
 }
 
 func TestFieldsSEmbedI1(t test.SEmbedI1) {
@@ -31,22 +31,22 @@ func TestFieldsPImplEmbedI1(t test.PImplEmbedI1) {
 
 func TestFieldsSEmbedP1(t test.SEmbedP1) {
 	a := t.SourceField
-	t.SinkField = a // $ P1[t] SEmbedP1[t] ql_P1 SPURIOUS: ql_S1
+	t.SinkField = a // $ P1[t] SEmbedP1[t] ql_P1
 }
 
 func TestFieldsSEmbedS1(t test.SEmbedS1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[t] SEmbedS1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[t] SEmbedS1[t] ql_S1
 }
 
 func TestFieldsSEmbedPtrP1(t test.SEmbedPtrP1) {
 	a := t.SourceField
-	t.SinkField = a // $ P1[t] SEmbedPtrP1[t] ql_P1 SPURIOUS: ql_S1
+	t.SinkField = a // $ P1[t] SEmbedPtrP1[t] ql_P1
 }
 
 func TestFieldsSEmbedPtrS1(t test.SEmbedPtrS1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[t] SEmbedPtrS1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[t] SEmbedPtrS1[t] ql_S1
 }
 
 func TestFieldsSImplEmbedS1(t test.SImplEmbedS1) {
@@ -61,25 +61,25 @@ func TestFieldsSEmbedSEmbedI1(t test.SEmbedSEmbedI1) {
 
 func TestFieldsSEmbedSEmbedS1(t test.SEmbedSEmbedS1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[t] SEmbedS1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[t] SEmbedS1[t] ql_S1
 }
 
 func TestFieldsSEmbedSEmbedPtrS1(t test.SEmbedSEmbedPtrS1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[t] SEmbedPtrS1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[t] SEmbedPtrS1[t] ql_S1
 }
 
 func TestFieldsSEmbedPtrSEmbedS1(t test.SEmbedPtrSEmbedS1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[t] SEmbedS1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[t] SEmbedS1[t] ql_S1
 }
 
 func TestFieldsSEmbedPtrSEmbedPtrS1(t test.SEmbedPtrSEmbedPtrS1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[t] SEmbedPtrS1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[t] SEmbedPtrS1[t] ql_S1
 }
 
 func TestFieldsSEmbedS1AndSEmbedS1(t test.SEmbedS1AndSEmbedS1) {
 	a := t.SourceField
-	t.SinkField = a // $ S1[t] ql_S1 SPURIOUS: ql_P1
+	t.SinkField = a // $ S1[t] ql_S1
 }