Use FindMainBody to retrieve node of main()'s body

src/compiler/translator/DeferGlobalInitializers.cpp

@@ -106,10 +106,7 @@ void InsertInitCodeToMain(TIntermBlock *root, TIntermSequence *deferredInitializ
     TIntermBlock *initGlobalsBlock = new TIntermBlock();
     initGlobalsBlock->getSequence()->swap(*deferredInitializers);
 
-    TIntermFunctionDefinition *main = FindMain(root);
-    ASSERT(main != nullptr);
-    TIntermBlock *mainBody = main->getBody();
-    ASSERT(mainBody != nullptr);
+    TIntermBlock *mainBody = FindMainBody(root);
     mainBody->getSequence()->insert(mainBody->getSequence()->begin(), initGlobalsBlock);
 }
 

src/compiler/translator/EmulateGLFragColorBroadcast.cpp

@@ -84,7 +84,7 @@ void GLFragColorBroadcastTraverser::broadcastGLFragColor(TIntermBlock *root)
     {
         return;
     }
-    TIntermSequence *mainSequence = FindMain(root)->getBody()->getSequence();
+    TIntermSequence *mainSequence = FindMainBody(root)->getSequence();
     // Now insert statements
     //   gl_FragData[1] = gl_FragData[0];
     //   ...

src/compiler/translator/InitializeVariables.cpp

@@ -224,10 +224,7 @@ void InitializeVariables(TIntermBlock *root,
                          ShShaderSpec shaderSpec,
                          const TExtensionBehavior &extensionBehavior)
 {
-
-    TIntermFunctionDefinition *main = FindMain(root);
-    ASSERT(main != nullptr);
-    TIntermBlock *body = main->getBody();
+    TIntermBlock *body = FindMainBody(root);
     InsertInitCode(body->getSequence(), vars, symbolTable, shaderVersion, shaderSpec,
                    extensionBehavior);
 }

src/compiler/translator/UseInterfaceBlockFields.cpp

@@ -100,9 +100,7 @@ void UseInterfaceBlockFields(TIntermBlock *root,
                              const InterfaceBlockList &blocks,
                              const TSymbolTable &symbolTable)
 {
-    TIntermFunctionDefinition *main = FindMain(root);
-    TIntermBlock *mainBody          = main->getBody();
-    ASSERT(mainBody);
+    TIntermBlock *mainBody = FindMainBody(root);
     InsertUseCode(mainBody->getSequence(), blocks, symbolTable);
 }