Always enable MemorySanitizer instrumentation for vertex routines

Bug: b/188205704
Change-Id: I2c015294234fe76e05d8ec28b97f97cfe93ab0e9
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/65572
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Device/VertexProcessor.cpp b/src/Device/VertexProcessor.cpp
index 833fa6a..89511b1 100644
--- a/src/Device/VertexProcessor.cpp
+++ b/src/Device/VertexProcessor.cpp
@@ -97,6 +97,8 @@
 
 	if(!routine)  // Create one
 	{
+		ScopedPragma msan(MemorySanitizerInstrumentation, true);
+
 		VertexRoutine *generator = new VertexProgram(state, pipelineLayout, vertexShader, descriptorSets);
 		generator->generate();
 		routine = (*generator)("VertexRoutine_%0.8X", state.shaderID);