[ORC][C-bindings] Fix some ORC C bindings function names and signatures.

LLVMOrcDisposeObjectLayer and LLVMOrcExecutionSessionGetJITDylibByName did not
have matching signatures between the C-API header and binding implementations.
Fixes http://llvm.org/PR49745.

Patch by Mats Larsen. Thanks Mats!

Reviewed by: lhames

Differential Revision: https://reviews.llvm.org/D99478

llvm/include/llvm-c/Orc.h

@@ -339,8 +339,7 @@ LLVMErrorRef LLVMOrcResourceTrackerRemove(LLVMOrcResourceTrackerRef RT);
  * ownership has not been passed to a JITDylib (e.g. because some error
  * prevented the client from calling LLVMOrcJITDylibAddGenerator).
  */
-void LLVMOrcDisposeDefinitionGenerator(
-    LLVMOrcDefinitionGeneratorRef DG);
+void LLVMOrcDisposeDefinitionGenerator(LLVMOrcDefinitionGeneratorRef DG);
 
 /**
  * Dispose of a MaterializationUnit.
@@ -388,7 +387,9 @@ LLVMOrcExecutionSessionCreateJITDylib(LLVMOrcExecutionSessionRef ES,
  * Returns the JITDylib with the given name, or NULL if no such JITDylib
  * exists.
  */
-LLVMOrcJITDylibRef LLVMOrcExecutionSessionGetJITDylibByName(const char *Name);
+LLVMOrcJITDylibRef
+LLVMOrcExecutionSessionGetJITDylibByName(LLVMOrcExecutionSessionRef ES,
+                                         const char *Name);
 
 /**
  * Return a reference to a newly created resource tracker associated with JD.

llvm/lib/ExecutionEngine/Orc/OrcV2CBindings.cpp

@@ -393,7 +393,7 @@ void LLVMOrcDisposeJITTargetMachineBuilder(
   delete unwrap(JTMB);
 }
 
-void lLVMOrcDisposeObjectLayer(LLVMOrcObjectLayerRef ObjLayer) {
+void LLVMOrcDisposeObjectLayer(LLVMOrcObjectLayerRef ObjLayer) {
   delete unwrap(ObjLayer);
 }