Fix primary SRC section size in PelMinimal size procedure

Signed-off-by: Caleb Palmer <cnpalmer@us.ibm.com>
Change-Id: Iace36e530fdd514c196d9a42b449606bb200bd63
diff --git a/attn/pel/pel_minimal.cpp b/attn/pel/pel_minimal.cpp
index c8b377b..10659cc 100644
--- a/attn/pel/pel_minimal.cpp
+++ b/attn/pel/pel_minimal.cpp
@@ -52,7 +52,7 @@
     // size of primary SRC section
     if (_ps)
     {
-        size += _ph->header().size;
+        size += _ps->header().size;
     }
 
     // size of extended user section