Merge to XFA: Enforce input and output dimensionalities for CPDF_StitchFunc.

testing/resources/bug_551460.in

Index: testing/resources/bug_551460.in
diff --git a/testing/resources/bug_551460.in b/testing/resources/bug_551460.in
new file mode 100644
index 0000000000000000000000000000000000000000..5ed2f3f1172a594c86b636bc3964b7edc175e80e
--- /dev/null
+++ b/testing/resources/bug_551460.in
@@ -0,0 +1,75 @@
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