small std::find conversion

Signed-off-by: Rosen Penev <rosenp@gmail.com>

include/spdlog/common-inl.h

@@ -7,6 +7,9 @@
 #include <spdlog/common.h>
 #endif
 
+#include <algorithm>
+#include <iterator>
+
 namespace spdlog {
 namespace level {
 
@@ -31,15 +34,10 @@ SPDLOG_INLINE const char *to_short_c_str(spdlog::level::level_enum l) SPDLOG_NOE
 
 SPDLOG_INLINE spdlog::level::level_enum from_str(const std::string &name) SPDLOG_NOEXCEPT
 {
-    int level = 0;
-    for (const auto &level_str : level_string_views)
-    {
-        if (level_str == name)
-        {
-            return static_cast<level::level_enum>(level);
-        }
-        level++;
-    }
+    auto it = std::find(std::begin(level_string_views), std::end(level_string_views), name);
+    if (it != std::end(level_string_views))
+        return static_cast<level::level_enum>(std::distance(std::begin(level_string_views), it));
+
     // check also for "warn" and "err" before giving up..
     if (name == "warn")
     {