Add braces for conditional statements in raw_hash_map functions.

The current version violates the Google C++ style guide - see https://google.github.io/styleguide/cppguide.html#Formatting_Looping_Branching. This code does not fit into the historical exception that "the curly braces for the controlled statement or the line breaks inside the curly braces may be omitted if as a result the entire statement appears on either a single line (in which case there is a space between the closing parenthesis and the controlled statement) or on two lines (in which case there is a line break after the closing parenthesis and there are no braces)."

PiperOrigin-RevId: 609789188
Change-Id: Id7ae9596e454dac5581d19939564c07670077f92

absl/container/internal/raw_hash_map.h

@@ -198,10 +198,11 @@ class raw_hash_map : public raw_hash_set<Policy, Hash, Eq, Alloc> {
   std::pair<iterator, bool> insert_or_assign_impl(K&& k, V&& v)
   std::pair<iterator, bool> insert_or_assign_impl(K&& k, V&& v)
       ABSL_ATTRIBUTE_LIFETIME_BOUND {
       ABSL_ATTRIBUTE_LIFETIME_BOUND {
     auto res = this->find_or_prepare_insert(k);
     auto res = this->find_or_prepare_insert(k);
-    if (res.second)
+    if (res.second) {
       this->emplace_at(res.first, std::forward<K>(k), std::forward<V>(v));
       this->emplace_at(res.first, std::forward<K>(k), std::forward<V>(v));
-    else
+    } else {
       Policy::value(&*res.first) = std::forward<V>(v);
       Policy::value(&*res.first) = std::forward<V>(v);
+    }
     return res;
     return res;
   }
   }
 
 
@@ -209,10 +210,11 @@ class raw_hash_map : public raw_hash_set<Policy, Hash, Eq, Alloc> {
   std::pair<iterator, bool> try_emplace_impl(K&& k, Args&&... args)
   std::pair<iterator, bool> try_emplace_impl(K&& k, Args&&... args)
       ABSL_ATTRIBUTE_LIFETIME_BOUND {
       ABSL_ATTRIBUTE_LIFETIME_BOUND {
     auto res = this->find_or_prepare_insert(k);
     auto res = this->find_or_prepare_insert(k);
-    if (res.second)
+    if (res.second) {
       this->emplace_at(res.first, std::piecewise_construct,
       this->emplace_at(res.first, std::piecewise_construct,
                        std::forward_as_tuple(std::forward<K>(k)),
                        std::forward_as_tuple(std::forward<K>(k)),
                        std::forward_as_tuple(std::forward<Args>(args)...));
                        std::forward_as_tuple(std::forward<Args>(args)...));
+    }
     return res;
     return res;
   }
   }
 };
 };