Use s.c_str() in log messages

Partly resolves openbmc/openbmc 2905

Also, fixed related problem with parenthesis in occ_presence.cpp.

Tested: static_assert only

Change-Id: Ib0dbf9c895e9f636ddc873221fd1ef93980c0353
Signed-off-by: Joseph Reynolds <jrey@us.ibm.com>
diff --git a/occ_presence.cpp b/occ_presence.cpp
index 23fece0..59b886a 100644
--- a/occ_presence.cpp
+++ b/occ_presence.cpp
@@ -44,8 +44,8 @@
     if (manager.getNumOCCs() != occsPresent)
     {
         log<level::INFO>("OCC presence mismatch",
-                         entry("BMC_OCCS=%d", manager.getNumOCCs(),
-                         entry("OCC_OCCS=%d", occsPresent)));
+                         entry("BMC_OCCS=%d", manager.getNumOCCs()),
+                         entry("OCC_OCCS=%d", occsPresent));
         if (callBack)
         {
             callBack(true);
diff --git a/powercap.cpp b/powercap.cpp
index f2ae331..4c0c330 100644
--- a/powercap.cpp
+++ b/powercap.cpp
@@ -132,7 +132,7 @@
     auto pcapString {std::to_string(pcapValue)};
 
     log<level::INFO>("Writing pcap value to hwmon",
-                     entry("PCAP_PATH=%s",*fileName),
+                     entry("PCAP_PATH=%s",fileName->c_str()),
                      entry("PCAP_VALUE=%s",pcapString.c_str()));
     // Open the hwmon file and write the power cap
     std::ofstream file(*fileName, std::ios::out);