Fixed msvc compilation

include/spdlog/fmt/fmt.h

@@ -10,11 +10,11 @@
 // By default spdlog include its own copy.
 //
 
-
+#if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
 #pragma GCC diagnostic ignored "-Wsign-conversion"
-
+#endif
 
 #if !defined(SPDLOG_FMT_EXTERNAL)
 #ifdef SPDLOG_HEADER_ONLY
@@ -31,4 +31,7 @@
 #include <fmt/core.h>
 #include <fmt/format.h>
 #endif
+
+#if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop
+#endif
\ No newline at end of file

src/fmt.cpp

@@ -6,7 +6,7 @@
 // Copyright (c) 2012 - 2016, Victor Zverovich
 // All rights reserved.
 
-
+#if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
 #pragma GCC diagnostic ignored "-Wsign-conversion"
@@ -15,7 +15,7 @@
 #include "spdlog/fmt/bundled/format-inl.h"
 
 #pragma GCC diagnostic pop
-
+#endif
 
 
 FMT_BEGIN_NAMESPACE