small fixes to ccall lazy library path change (#37123)

doc/src/manual/calling-c-and-fortran-code.md

@@ -883,8 +883,8 @@ be computed at run time. To handle such cases, the library component of a `(name
 specification can be a function call, e.g. `(:dgemm_, find_blas())`. The call expression will
 be executed when the `ccall` itself is executed. However, it is assumed that the library
 location does not change once it is determined, so the result of the call can be cached and
-reused. Therefore, the number of times the expression executes is undefined, and returning
-different values for multiple calls results in undefined behavior.
+reused. Therefore, the number of times the expression executes is unspecified, and returning
+different values for multiple calls results in unspecified behavior.
 
 If even more flexibility is needed, it is possible
 to use computed values as function names by staging through [`eval`](@ref) as follows:

src/ccall.cpp

@@ -166,8 +166,7 @@ static Value *runtime_sym_lookup(
  gvname += f_name;
  gvname += "_";
  gvname += std::to_string(globalUnique++);
- Module *M = ctx.emission_context.shared_module(jl_LLVMContext);
- llvmgv = new GlobalVariable(*M, T_pvoidfunc, false,
+ llvmgv = new GlobalVariable(*jl_Module, T_pvoidfunc, false,
  GlobalVariable::ExternalLinkage,
  Constant::getNullValue(T_pvoidfunc), gvname);
  }