tweak up another warning level.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3105 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/codec/g726/libg726.vcproj

@@ -46,6 +46,7 @@
 				RuntimeLibrary="3"
 				UsePrecompiledHeader="0"
 				WarningLevel="4"
+				WarnAsError="true"
 				Detect64BitPortabilityProblems="true"
 				DebugInformationFormat="3"
 			/>
@@ -106,6 +107,7 @@
 				RuntimeLibrary="2"
 				UsePrecompiledHeader="0"
 				WarningLevel="4"
+				WarnAsError="true"
 				Detect64BitPortabilityProblems="true"
 				DebugInformationFormat="3"
 			/>