ELF2: Rename getMostConstrainingVisibility -> getVisibility. NFC.

The previous name was too long.

llvm-svn: 250920
diff --git a/lld/ELF/Symbols.cpp b/lld/ELF/Symbols.cpp
index e92c046..5a1596a 100644
--- a/lld/ELF/Symbols.cpp
+++ b/lld/ELF/Symbols.cpp
@@ -40,10 +40,8 @@
   if (L > R)
     return -Other->compare<ELFT>(this);
 
-  uint8_t LV = getMostConstrainingVisibility();
-  uint8_t RV = Other->getMostConstrainingVisibility();
-  MostConstrainingVisibility = getMinVisibility(LV, RV);
-  Other->MostConstrainingVisibility = MostConstrainingVisibility;
+  Visibility = Other->Visibility =
+      getMinVisibility(Visibility, Other->Visibility);
 
   IsUsedInRegularObj |= Other->IsUsedInRegularObj;
   Other->IsUsedInRegularObj |= IsUsedInRegularObj;