Fixes rust-lang#46983. Fixes bad error message when converting anonymous lifetime to 'static

Author: davidtwco

src/librustc/infer/error_reporting/nice_region_error/named_anon_conflict.rs

@@ -118,4 +118,17 @@ impl<'a, 'gcx, 'tcx> NiceRegionError<'a, 'gcx, 'tcx> {
             .emit();
         return Some(ErrorReported);
     }
+
+    // This method returns whether the given Region is Named
+    pub(super) fn is_named_region(&self, region: ty::Region<'tcx>) -> bool {
+        match *region {
+            ty::ReStatic => true,
+            ty::ReFree(ref free_region) => match free_region.bound_region {
+                ty::BrNamed(..) => true,
+                _ => false,
+            },
+            ty::ReEarlyBound(_) => true,
+            _ => false,
+        }
+    }
 }

src/librustc/infer/error_reporting/nice_region_error/util.rs

@@ -198,16 +198,4 @@ impl<'a, 'gcx, 'tcx> NiceRegionError<'a, 'gcx, 'tcx> {
         }
         false
     }
-
-    // This method returns whether the given Region is Named
-    pub(super) fn is_named_region(&self, region: Region<'tcx>) -> bool {
-        match *region {
-            ty::ReFree(ref free_region) => match free_region.bound_region {
-                ty::BrNamed(..) => true,
-                _ => false,
-            },
-            ty::ReEarlyBound(_) => true,
-            _ => false,
-        }
-    }
 }