fix travis

scripts/travis_after_failure.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 
 if [ ${TASK} == "R-package" ]; then
-    cat R-package/xgboost.Rcheck/*.log
+    cat xgboost/xgboost.Rcheck/*.log
 fi

src/utils/thread_buffer.h

@@ -219,7 +219,7 @@ class ThreadBuffer {
       factory_.Destroy();
     }
   }
-  inline void SetParam(const char *name, const char *val) {    
+  inline void SetParam(const char *name, const char *val) {
   }
   inline bool Init(void) {
     if (!factory_.Init()) return false;
@@ -242,7 +242,7 @@ class ThreadBuffer {
   inline const ElemFactory &get_factory() const {
     return factory_;
   }
-  
+
  private:
   // initialized
   bool init_end_;

wrapper/xgboost_wrapper.cpp

@@ -181,14 +181,14 @@ const char *XGBSetGetLastError_(const char *str_set) {
 #else
 // crippled implementation for solaris case
 // exception handling is not needed for R, so it is OK.
-#define API_BEGIN() 
+#define API_BEGIN()
 #define API_END_FINALIZE(Finalize) return 0
 #define API_END() return 0
 
 const char *XGBSetGetLastError_(const char *str_set) {
   return NULL;
 }
-#endif
+#endif  // XGBOOST_STRICT_CXX98_
 
 /*! \brief return str message of the last error */
 const char *XGBGetLastError() {