Fixed gcc-4.4 errors (bug 4346, r=dvander).

public/filesystem_init.cpp

@@ -531,7 +531,7 @@ bool IsLowViolenceBuild( void )
 	return retVal;
 #elif _LINUX
 	return false;
-#elif
+#else
 	#error "Fix me"
 #endif
 }

public/tier0/platform.h

@@ -288,7 +288,7 @@ typedef void * HINSTANCE;
 
 #elif _LINUX
 	#define DECL_ALIGN(x) __attribute__((aligned(x)))
-#elif
+#else
         #define DECL_ALIGN(x) /* */
 #endif