Merge pull request #5680 from thinkyhead/rc_configs_puhlease

code_value_float tweak

Marlin/Marlin_main.cpp

 }
 
 inline float code_value_float() {
-  float ret;
   char* e = strchr(seen_pointer, 'E');
-  if (e) {
-    *e = 0;
-    ret = strtod(seen_pointer + 1, NULL);
-    *e = 'E';
-  }
-  else
-    ret = strtod(seen_pointer + 1, NULL);
+  if (!e) return strtod(seen_pointer + 1, NULL);
+  *e = 0;
+  float ret = strtod(seen_pointer + 1, NULL);
+  *e = 'E';
   return ret;
 }