writefrudata: update error message for FRU not found

Update the error message for FRU not found to specify that the FRU isn't
found in the generated source.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I1f624950ec995b40af178f3cc0006b26abf1d9fa
diff --git a/writefrudata.cpp b/writefrudata.cpp
index b351c57..0b70d3f 100644
--- a/writefrudata.cpp
+++ b/writefrudata.cpp
@@ -214,7 +214,7 @@
     auto iter = frus.find(fruid);
     if (iter == frus.end())
     {
-        log<level::ERR>("Unable to get the FRU info",
+        log<level::ERR>("Unable to find FRUID in generated list",
                         entry("FRU=%d", static_cast<int>(fruid)));
         return -1;
     }